






Advanced bacterial cultures in dry powder form.
Perfect for lower pH / acidic environments.
Add 1 Sachet A and 1 Sachet B for approximately 100L / 26 US Gal of tank volume. For smaller tanks (e.g., 50L / 13 US Gal), use a proportionate amount. Adding more than recommended is safe. However, excess bacteria may cause temporary surface slime or cloudy water.
For new tanks, we recommend a 2-week Dark Start. Alternatively, introduce plants immediately and perform large 90% water changes every 2–3 days, and add APT Balance each week.
Add APT Balance every month, after a tank reset, filter cleaning, adding new animals or whenever you need to improve or restore microbial balance. Turn off UV sterilizer for 24 hours following use. Safe to add directly into a tank with livestock present.
Inside Sachet A is a specially formulated blend of nitrifying microbes, including AOB and NOB nitrifying bacteria such as Nitrosomonas sp., Nitrobacter sp., Nitrosococcus sp., Nitrospira sp., It is designed to accelerate tank cycling and the breakdown of Ammonia into Nitrites and into Nitrates. >20 Billion CFUs per gram.
Sachet B contains a carefully selected blend of mulm digesting microbes: Pseudomonas, Arthrobacter, Bacillus subtilis, Alcaligenes, Actinomycetota, Polyphosphate-accumulating bacteria (PABs).
Designed to accelerate the decomposition of plant detritus and animal waste into non-toxic and harmless CO2 and water. >20 Billion CFUs per gram.
Even though APT Balance speeds up tank cycling, we recommend waiting a week or two before introducing fish and animals. This allows time for the tank's complex microbial community to establish itself more fully, beyond simple water parameters. We write about this topic in more detail here.