Isopod Substrate

6/3 We now sell leaf bags and sphagnum moss bags separately.

Free shipping on these heavy products. These products cannot ship by express mail (with your millipedes), due to weight. Shipping cost is built into the product cost. They ship ONLY by Priority Mail, a 2-3 day service by default and usually separately from other products you order. Please plan accordingly.

New pet isopod keepers consistently underestimate the importance of the substrate in their pets' tanks. A quality substrate is the single most important care factor in maintaining and growing your population of pet isopods. It is their primary food source. It is their shelter. It is their source for hydration. A good substrate provides all these things and any supplemental foods or other products are just that.

Please review my Pet Isopod Care Sheet for more information and photos.


Two options for purchase on this page:


1. The Composite Blend is ALL the necessary ingredients for captive isopods. Volume measures approximately 10 inches by 7 inches by 4.75 inches and consisits of soil, including composted materials, sand, sphagnum peat moss, and calcium carbonate. This is usually enough substrate to provide food for isopods cultures for maybe six months, depending on the size and number of individuals. It can be mixed in with your current substrate to freshen it up with all the healthy ingredients that may be depleted from it. $19. Free Shipping.

2. The Composite & Hardwood Cup substrate option is essentially the same as the composite subtrate above but includes a 3.75 ounce cup of properly decayed oak flakes. Sprinkle a third of the cup on the surface of the substrate every month or as needed. These fine bits are more easily chewed by isopods. They love it! $22. Free Shipping.

All organic material continues to decay through a natural process of decomposition via mold which you may or may not see. If mold forms as the substrate encounters all the native spores in the new environment (tank), it may be spot cleaned. The substrate may need to be turned over a bit. After a month or so the micro-ecosystem in your cage should come into balance. If you already have a seasoned cage set up, adding smaller amounts of our substrate to the tank over time will help to keep the current ecosystem in balance, while providing new food material for your pets.

pet isopod substrate tank product buy bioactive
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  • Item #: bic798
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Price $19.00
Availability In-Stock

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