{"product_id":"powder-white-isopods","title":"Powder White Isopods (Porcellionides Pruinosus)","description":"\u003cp\u003eThe Powder White (sometimes listed as \"White Out\") is the pale variant of the famous \u003cem\u003ePorcellionides pruinosus\u003c\/em\u003e Powder isopod — same hardy species as the original \u003ca href=\"\/products\/powder-blue\"\u003ePowder Blue\u003c\/a\u003e and the popular \u003ca href=\"\/products\/powder-orange-isopods\"\u003ePowder Orange\u003c\/a\u003e, just with a ghostly white-to-pale-grey colouration that creates dramatic contrast against dark substrate. The colour ranges from solid white in juveniles to a soft powdery sheen in mature adults, with the distinctive matte, frosted exoskeleton texture that defines the entire Powder line.\u003c\/p\u003e\n\u003cp\u003eWhat makes Powder Whites particularly worth keeping is the combination: striking pale colouration paired with the bulletproof hardiness of \u003cem\u003eP. pruinosus\u003c\/em\u003e. You're getting designer-tier visual appeal on a species that's genuinely beginner-friendly, breeds prolifically, and tolerates the kinds of husbandry mistakes that would damage delicate species. They're also notably more diurnal than most isopods — meaning you'll actually see them rather than just knowing they exist.\u003c\/p\u003e\n\u003cp\u003eAvailable in starter colony groups. Captive-bred stock from established UK colonies. Mixed sizes included for immediate breeding potential.\u003c\/p\u003e\n\u003ch2\u003eQuick Care Summary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003ePorcellionides pruinosus\u003c\/em\u003e 'Powder White' \/ 'White Out'\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Names:\u003c\/strong\u003e Powder White Isopod, White Out Isopod, P. pruinosus White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Porcellionidae\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Native to Mediterranean and Southern Europe (selectively bred morph); now globally distributed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdult Size:\u003c\/strong\u003e Up to 1.5 cm (10–15 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e 1–2 years typical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Very Easy — among the most beginner-friendly isopods\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 18–29°C (room temperature works year-round)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 50–70% with moisture gradient\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVentilation:\u003c\/strong\u003e Moderate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConglobation:\u003c\/strong\u003e No — they cannot roll into a ball, they rely on speed instead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBehaviour:\u003c\/strong\u003e Fast, active, often diurnal, surface-dwelling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreeding:\u003c\/strong\u003e Extremely prolific — among the fastest-breeding isopods available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat Makes Powder White Isopods Special\u003c\/h2\u003e\n\u003cp\u003eSeveral factors have made Powder Whites one of the most popular Porcellionides morphs in the hobby:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGhostly white colouration that's genuinely distinctive.\u003c\/strong\u003e Juveniles emerge solid white and develop a soft powdery sheen as they mature — almost ethereal in appearance. The pale colouration creates dramatic contrast against dark substrate and leaf litter, and unlike Dwarf Whites which are tiny and easily missed, Powder Whites are large enough to actually appreciate visually.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe \"powder\" texture is functional, not just decorative.\u003c\/strong\u003e Like all \u003cem\u003eP. pruinosus\u003c\/em\u003e, they have the distinctive powdery or velvety exoskeleton texture — microscopic surface texturing that gives a matte, frosted appearance. The scientific name \u003cem\u003epruinosus\u003c\/em\u003e means \"covered in frost,\" referring to this exact feature. The texture increases hydrophobicity and helps with moisture management — it's an adaptation, not just aesthetics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotably more diurnal than other isopods.\u003c\/strong\u003e Most isopods are nocturnal and rarely seen during the day. Powder Whites are notably more active during daylight hours, often visible on substrate surfaces and around food sources. The white colouration combined with diurnal activity makes them genuinely viable as display animals rather than just functional cleanup crew.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAmong the fastest isopods commonly kept.\u003c\/strong\u003e Their soft bodies (they can't conglobate) mean they rely on speed for defence — and they're genuinely quick. Watching a colony scurry across substrate is entertaining in a way slower species don't match.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProlific breeding.\u003c\/strong\u003e Sub-adults often begin breeding before reaching full size. A starter culture of 10 can multiply many times over within months. This rapid reproduction is one reason they're so popular as bioactive cleanup crews — they quickly establish self-sustaining populations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBulletproof hardiness.\u003c\/strong\u003e \u003cem\u003eP. pruinosus\u003c\/em\u003e tolerates an extraordinary range of conditions, from arid to tropical. Powder Whites handle temperature swings, humidity variations, and minor husbandry mistakes that would devastate sensitive species. For complete beginners, this forgiveness factor is invaluable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReptile feeder potential.\u003c\/strong\u003e Their soft exoskeletons and rapid breeding make them excellent feeder animals for reptiles and amphibians. The colony self-sustains while providing a constant trickle of feeders.\u003c\/p\u003e\n\u003ch2\u003eHow Powder Whites Compare to Other White Isopods\u003c\/h2\u003e\n\u003cp\u003eIf you're choosing between white isopod options, here's how Powder Whites fit in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs \u003ca href=\"\/products\/snow-white\"\u003eSnow White (P. laevis)\u003c\/a\u003e:\u003c\/strong\u003e Snow Whites are larger (up to 20 mm) \u003cem\u003ePorcellio laevis\u003c\/em\u003e with proper bright white colouration. Powder Whites are smaller (15 mm), faster, more diurnal, and have the distinctive powdery texture. Snow Whites are calmer display animals; Powder Whites are quick energetic workhorses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs \u003ca href=\"\/products\/dwarf-white-isopods\"\u003eDwarf White Isopods\u003c\/a\u003e:\u003c\/strong\u003e Dwarf Whites are tiny (3 mm), parthenogenetic (all-female), and primarily for invisible bioactive cleanup. Powder Whites are 5x larger, visible, and breed sexually. Very different use cases — Dwarf Whites for unobtrusive cleanup, Powder Whites for visible, active colonies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs \u003ca href=\"\/products\/powder-blue\"\u003ePowder Blue\u003c\/a\u003e:\u003c\/strong\u003e Same species (\u003cem\u003eP. pruinosus\u003c\/em\u003e), different colour morph. Powder Blue has dusty blue-grey tones; Powder White has pale white tones. Identical care, identical behaviour, identical prolific breeding. Choose based on colour preference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs \u003ca href=\"\/products\/powder-orange-isopods\"\u003ePowder Orange\u003c\/a\u003e:\u003c\/strong\u003e Another P. pruinosus morph with vibrant orange tones. Same care as Powder White but warm colour vs cool white. Many keepers collect multiple Powder morphs to build varied colonies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSetting Up the Enclosure\u003c\/h2\u003e\n\u003cp\u003eA 3–6 litre container suits a starter colony of 10 Powder Whites. Larger purchases (50–100) need bigger enclosures or can be divided across multiple containers. Plastic tubs with clip-lock lids work particularly well — inexpensive, easy to maintain, and easy to drill ventilation holes into.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant — they're escape artists.\u003c\/strong\u003e Powder Whites are fast and persistent. Ensure lids are secure with no gaps. Cover ventilation holes with fine mesh. They'll find and exploit escape routes that slower species would ignore.\u003c\/p\u003e\n\u003cp\u003eBrowse our \u003ca href=\"\/collections\/accessories\"\u003eaccessories collection\u003c\/a\u003e for appropriate enclosures, vents, and other essentials.\u003c\/p\u003e\n\u003ch2\u003eThe Moisture Gradient\u003c\/h2\u003e\n\u003cp\u003ePowder Whites need a moisture gradient — they're more drought-tolerant than tropical species but still need access to moisture:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne corner damp:\u003c\/strong\u003e Sphagnum moss patches and damp leaf litter (\"hydration station\"). Mist this area regularly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemaining area drier:\u003c\/strong\u003e Drier substrate with leaf litter cover. Allow this side to be noticeably drier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe gradient lets the colony self-regulate. Powder Whites do exceptionally well across a wide range of humidity conditions — from semi-arid to tropical — but always need access to some moisture for moulting and rehydration.\u003c\/p\u003e\n\u003ch2\u003eSubstrate\u003c\/h2\u003e\n\u003cp\u003ePowder Whites aren't fussy about exact substrate composition. A moisture-retentive base with good structure works well:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCoconut coir or peat moss as a moisture-retentive base\u003c\/li\u003e\n\u003cli\u003eOrganic topsoil mixed through\u003c\/li\u003e\n\u003cli\u003eSphagnum moss in the moist area\u003c\/li\u003e\n\u003cli\u003eDecaying softwood pieces\u003c\/li\u003e\n\u003cli\u003eGenerous hardwood leaf litter as top layer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSubstrate depth of 5–7 cm is adequate. Add cork bark hides spread throughout — even though they're more visible than most isopods, they still appreciate cover. Calcium-rich materials (limestone, crushed eggshells) mixed throughout support healthy moulting.\u003c\/p\u003e\n\u003ch2\u003eTemperature\u003c\/h2\u003e\n\u003cp\u003e18–29°C is the comfort range, with around 21–25°C being ideal. UK room temperature works year-round in most homes — no supplementary heating typically needed. They tolerate temperature fluctuations that would stress more sensitive species, making them genuinely low-maintenance pets.\u003c\/p\u003e\n\u003ch2\u003eDiet\u003c\/h2\u003e\n\u003cp\u003ePowder Whites have appetites disproportionate to their small size — exactly what makes them such effective bioactive cleaners:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary diet (always available):\u003c\/strong\u003e Hardwood leaf litter (oak, beech, hazel), decaying softwood, rotting bark\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetables (regular):\u003c\/strong\u003e Carrot, courgette, sweet potato, cucumber, spinach\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein (1–2x weekly):\u003c\/strong\u003e Fish flakes, dried daphnia, freeze-dried shrimp, freeze-dried peas. Browse our \u003ca href=\"\/collections\/accessories\"\u003eaccessories collection\u003c\/a\u003e for the full range of protein supplements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium (always available):\u003c\/strong\u003e Cuttlebone, limestone, crushed eggshells\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDon't overfeed.\u003c\/strong\u003e Old food spoils quickly and attracts fungus gnats, fruit flies, and mites. Powder Whites are efficient enough that minimal supplementation is needed once a culture is established — much of their nutrition comes from substrate decomposition itself.\u003c\/p\u003e\n\u003ch2\u003eBreeding\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eP. pruinosus\u003c\/em\u003e are famous for prolific breeding — provide basic care and they'll multiply without any special encouragement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat to expect:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRapid reproduction once established\u003c\/li\u003e\n\u003cli\u003eLarge brood sizes\u003c\/li\u003e\n\u003cli\u003eSub-adults beginning to breed before reaching full size\u003c\/li\u003e\n\u003cli\u003ePotentially explosive population growth in good conditions\u003c\/li\u003e\n\u003cli\u003eSelf-sustaining colonies that maintain themselves indefinitely\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOptimal breeding occurs around 24–27°C, though they'll breed across their entire comfortable temperature range. Well-fed colonies with appropriate humidity grow quickly — sometimes faster than expected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSexing:\u003c\/strong\u003e As they reach adulthood, females develop a visible white cavity between their legs (the marsupium\/brood pouch). Males lack this cavity and tend to be slightly smaller. Live mancae emerge from the marsupium and moult through several stages before reaching adulthood.\u003c\/p\u003e\n\u003ch2\u003ePair With Springtails\u003c\/h2\u003e\n\u003cp\u003ePowder Whites live well alongside \u003ca href=\"\/collections\/springtails-for-sale\"\u003espringtails\u003c\/a\u003e, which help control mould and process fine debris. The combination creates an effective cleanup crew for bioactive setups — springtails handle smaller debris and mould while Powder Whites process larger organic matter and leftover food.\u003c\/p\u003e\n\u003ch2\u003eBioactive Use — Why They Excel\u003c\/h2\u003e\n\u003cp\u003ePowder Whites are among the most popular and effective bioactive cleanup crew isopods available:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoracious appetites\u003c\/strong\u003e efficiently process waste, decaying matter, mould, and uneaten food\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProlific breeding\u003c\/strong\u003e maintains population without intervention\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface-active nature\u003c\/strong\u003e means they encounter and process waste quickly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistinctive white tone\u003c\/strong\u003e adds visual interest different from typical brown\/grey cleanup crews\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft bodies\u003c\/strong\u003e make them palatable as occasional snacks for insectivorous pets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdaptable to various enclosure conditions\u003c\/strong\u003e from arid to tropical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParticularly effective in gecko tanks\u003c\/strong\u003e — rinse solid waste off walls into the substrate and let the isopods handle the rest\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTheir soft exoskeletons make them suitable as occasional snacks for insectivorous pets like dart frogs and small lizards. The rapid reproduction compensates for any predation, and in smaller enclosures, some predation actually helps control population numbers.\u003c\/p\u003e\n\u003ch2\u003eWho Should Buy Powder White Isopods?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete beginners wanting a forgiving first species\u003c\/li\u003e\n\u003cli\u003eBioactive enthusiasts wanting effective cleanup crews\u003c\/li\u003e\n\u003cli\u003eAnyone wanting fast, visible population growth\u003c\/li\u003e\n\u003cli\u003eThose who appreciate striking white colouration with distinctive powder texture\u003c\/li\u003e\n\u003cli\u003eReptile\/amphibian keepers wanting feeders that double as cleanup crew\u003c\/li\u003e\n\u003cli\u003eCollectors building Porcellionides collections across multiple morphs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot ideal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAnyone wanting large, slow, calm display specimens\u003c\/li\u003e\n\u003cli\u003eKeepers preferring conglobating species\u003c\/li\u003e\n\u003cli\u003eSetups where escapes would be disruptive (they're fast)\u003c\/li\u003e\n\u003cli\u003eAnyone wanting bold patterning rather than uniform colour\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRealistic Expectations\u003c\/h2\u003e\n\u003cp\u003ePowder Whites live up to their reputation. Expect bulletproof hardiness, prolific breeding, and notable activity levels. Expect to see them during the day rather than just at night. Expect rapid population growth that may require expanding to additional enclosures within months.\u003c\/p\u003e\n\u003cp\u003eNewly arrived juveniles often appear solid white, then develop the characteristic powdery sheen as they mature. Some specimens will display particularly bright white while others show more muted off-white tones; this variation is normal across a colony. Just before moulting, individuals often display especially pronounced powdery appearance.\u003c\/p\u003e\n\u003cp\u003eDon't expect calm, slow, observable creatures — these are quick, energetic isopods. If that energy appeals to you, they're hard to beat for the price. If you prefer stately, slow-moving display animals, consider Snow Whites or Armadillidium species instead.\u003c\/p\u003e\n\u003ch2\u003eBuilding Your Setup\u003c\/h2\u003e\n\u003cp\u003eA complete Powder White setup needs basic substrate components, calcium sources, leaf litter, and protein supplements. Browse our \u003ca href=\"\/collections\/accessories\"\u003eaccessories collection\u003c\/a\u003e for everything you need — enclosures, ventilation, leaf litter, calcium (cuttlebone, limestone), and protein supplements.\u003c\/p\u003e\n\u003cp\u003eFor a deeper guide to selecting and setting up your first isopods, see our \u003ca href=\"\/blogs\/isopods-useful-articles\/setting-up-selecting-your-first-isopods\"\u003esetting up guide\u003c\/a\u003e. Browse the full \u003ca href=\"\/collections\/isopods-for-sale\"\u003eisopod collection\u003c\/a\u003e for more options.\u003c\/p\u003e","brand":"PostPods","offers":[{"title":"10","offer_id":45172958888230,"sku":"PW10","price":5.0,"currency_code":"GBP","in_stock":true},{"title":"20","offer_id":49241540886822,"sku":"PW10","price":9.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":45172958953766,"sku":"PW50","price":22.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":45172958920998,"sku":"PW100","price":40.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/0707\/2294\/files\/2509.jpg?v=1688162480","url":"https:\/\/postpods.co.uk\/products\/powder-white-isopods","provider":"Isopods For Sale UK | PostPods","version":"1.0","type":"link"}