Seachem Stability - For Freshwater and Marine Aquariums 250ml

(593 Reviews)

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$9.38

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(10000 available )

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316 Ratings
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Reviews
  • steven joyce

    > 3 day

    I 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.

  • Christopher Lang

    > 3 day

    Ive 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.

  • Diana

    > 3 day

    The 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.

  • showna

    09-06-2025

    Awesome 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.

  • ashley

    > 3 day

    Did 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.

  • Sheng Wang

    > 3 day

    I 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.

  • Mike Zhang

    > 3 day

    I 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.

  • Binaryfuneral

    Greater than one week

    It 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!

  • German Tillman

    > 3 day

    Works as described better than other brands, best product of its kind out there

  • Mason McCarthy

    > 3 day

    Added 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.

Stability® will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death: "new tank syndrome". Stability® is formulated specifically for the aquarium and contains a synergistic blend of aerobic, anaerobic, and facultative bacteria which facilitate the breakdown of waste organics, ammonia, nitrite, and nitrate. The bacteria employed by Stability® are non-sulfur fixing and will not produce toxic hydrogen sulfide. Stability® is completely harmless to all aquatic organisms as well as aquatic plants, thus there is no danger of over use. Stability® is the culmination of nearly a decade of research and development and represents the current state of the art in natural biological management. The bacteria used in competing products are inherently unstable. The conditions necessary for their growth and development fall into a very narrow range of temperatures, pH, organic loads, etc. When any of these parameters are not strictly within the proper range, the bacterial culture quickly crashes and dies. Stability® is not limited this way. The necessary conditions for the growth of Stability"s™ bacteria strains encompass a very broad range. When other bacteria begin to die off (usually from high organic loads caused by the undetected death of an organism), Stability™ simply becomes more effective.

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