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steven joyce
> 3 dayI swear this product does nothing. Do not buy this an expect to be able to add fish like the product advertises. You will end up with nothing but dead fish and a bottle of useless liquid. I love Seachem products but this one is worthless in my opinion.
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Christopher Lang
> 3 dayIve been using Stability weekly to regulate and supplement my biological filtration in several aquariums. Ive never had any issues with it and it seems to do a great job. Ive most recently used it to seed a brand-new filter in an already well-established aquarium. I ditched a hang-on-back filter that had been in use for years and switched over to a canister. Initially I was thinking of seeding the canister with pieces of the old filter material (a Biowheel) but I wanted to hand the Biowheel down to a friend, so it wasnt worth cutting up. I figured I could use Seachems loading dose of Stability to power-seed the new filter and it worked wonderfully. The whole time my water parameters stayed right where they should. Im pretty confident that you could use this stuff to cycle a tank almost immediately, although Im not sure Id really do it.
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Diana
> 3 dayThe guy at the local fish store called this snake oil. I have found through experience on three fish tanks that this combined with some pure ammonia solution is the only way to do a fish less cycle. Seeding from other tanks never worked for me, this got everything going in about 3 weeks.
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showna
09-06-2025Awesome product. Decided to try it out because I over-cleaned my tank gravel a bit and my ammonia spiked. I used it for 5 days and my test kit read 0 ammonia. Cant get better than that. This product is not a solution for long term problems. Your fish tank must be cycled without the use of anything (what I mean is you cant rely only on this product forever). This is definitely great if you want to start a new tank or give a boost to an existing tank.
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ashley
> 3 dayDid a great job at helping establish my new tank fast. One thing I lack is patience and I wanted fish immediate and wouldn’t have been able to do that without this product. My aquarium is now over a little month old, the cycle is complete and is thriving and I attribute a lot of that to using Stability at the beginning.
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Sheng Wang
> 3 dayI love this product. I even bought the Matrix in hoping to help harbor the anaerobic bacteria to help convert the nitrate. It really sped up my fishless nitrogen cycle during the initial aquarium setup. I wasnt even able to detect nitrate since it was all gobbled up by the bacteria that came in the bottle. Highly recommend.
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Mike Zhang
> 3 dayI used this to my shrimp tank, only took me 8 days to fully cycle the tank, I dosed more than the instructions said and my shrimp was fine.
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Binaryfuneral
Greater than one weekIt does exactly what it claims. I have set up numerous new tanks and filters with this and it really accelerates the unavoidable nitrogen cycle. Takes a month long cycle and compresses it to less than a week. Really great stuff. Does NOT replace the importable of knowing the nitrogen cycle!
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German Tillman
> 3 dayWorks as described better than other brands, best product of its kind out there
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Mason McCarthy
> 3 dayAdded a cap full once a day for 7 days and by day 5 my tank was fully cycled. I’ve tried countless other nitrifying starters and all have been a flop except this one.