A must-have supplement for any isopod or springtail keeper. Our 50g bag of 100% pure brewer's yeast (Saccharomyces cerevisiae) is a concentrated source of protein, B-vitamins, essential amino acids, and minerals including chromium, selenium, and zinc. Whether you're growing springtail cultures or boosting the nutrition of your isopod colonies, brewer's yeast is one of the most versatile and cost-effective foods you can keep on your shelf. A little goes a long way — a 50g bag will last most keepers several months.
Why Brewer's Yeast?
Brewer's yeast is one of the most protein-dense supplements available for invertebrates. The high protein and amino acid content supports healthy growth, moulting, and reproduction, while the B-vitamin complex helps to maintain strong immune function and overall vitality. The enzymes naturally present in brewer's yeast also aid digestion, helping your invertebrates break down and absorb nutrients more efficiently from their regular diet.
The Go-To Springtail Food
If you culture springtails, brewer's yeast is widely regarded as the single best food you can use. Just a tiny pinch sprinkled onto your charcoal, clay, or LECA substrate is enough to sustain a thriving culture for days. The yeast develops a light layer of mould in the humid culture environment, which the springtails feed on readily. It's clean, easy to use, and far less likely to attract mites or foul your cultures compared to alternatives like fish flakes or fruit scraps.
Brewer's yeast works brilliantly across all commonly cultured springtail species, including:
Folsomia candida (Temperate White Springtails) – The most widely kept species in the hobby. Brewer's yeast is the number one recommended food for culturing these on charcoal or clay substrates, producing rapid population growth with minimal maintenance.
Sinella curviseta (Pink Springtails) – Another popular species that thrives on a brewer's yeast diet, responding well to regular light dustings in humid cultures.
Tomocerus sp. (Silver/Grey Springtails) – These larger springtails feed readily on yeast and benefit from its nutritional profile, particularly when cultured on coconut chip or similar substrates.
Tropical springtail species – Whether you keep blue, orange, or other tropical varieties, brewer's yeast is an excellent staple food that supports healthy cultures across the board.
A Valuable Isopod Supplement
For isopods, brewer's yeast works best as a supplementary food alongside leaf litter, calcium, and other protein sources. The concentrated protein and mineral content makes it particularly useful for:
Porcellio & Porcellionides – Active, protein-hungry species like P. scaber, P. laevis (Dairy Cow), P. ornatus, and Porcellionides pruinosus (Powder Orange, Powder Blue) will readily consume brewer's yeast. These fast-breeding genera benefit from the extra protein to fuel their high energy levels and rapid reproduction.
Armadillidium – Species like A. vulgare, A. maculatum (Zebra), A. klugii (Clown), and A. gestroi appreciate brewer's yeast as part of a varied diet. The mineral content supports healthy exoskeleton development through successive moults.
Cubaris – Slower-breeding species like Rubber Ducky, Panda King, and other Cubaris varieties can benefit from the nutritional boost that brewer's yeast provides, supporting colony health and breeding success where every brood matters.
Trichorhina (Dwarf White/Dwarf Purple) – These tiny, prolific species respond well to brewer's yeast as a food source and are often kept alongside springtails in bioactive setups.
Brewer's yeast is also suitable for other invertebrates including millipedes, cockroaches, and beetles.
How to Use
For springtail cultures: Sprinkle a very small pinch onto your substrate every 2–4 days, or when the previous feeding has been consumed. Less is more — overfeeding can cause mould overgrowth and reduce oxygen in sealed cultures.
For isopods: Lightly dust a small amount into the enclosure as an occasional supplement alongside their regular diet of leaf litter, vegetables, and calcium. Remove any uneaten food after 48 hours to prevent unwanted mould.
What You Get
50g of 100% pure brewer's yeast. No additives, no fillers — just brewer's yeast.
