Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums, 16.9 Fl Oz (Pack of 1)

I keep my tank’s water pristine - the nitrate never gets past 20ppm. For the last couple years that <20ppm goal required the water changes happen every 6 days. Part of my routine is testing and recording the nitrate level (pH & temperature too) before and after doing the water. A couple months ago I started adding a couple capfuls Stability at water change time since I had an open bottle to finish up with no new tanks to cycle. The before nitrate test started showing reduced ppm, low enough to make a water change unnecessary. I didn’t believe it so I tested again. Got the same low nitrate reading. . Three more days of testing and finally on day 9 I did a water change. . I still wasn’t convinced but the same thing happened again. And again... No change in the fish, nothing different about the feeding. Nitrate staying low for more days. So odd! Then it dawned on me the only thing different is the Stability. It started to kick in after two water changes. It is why the changes are 9-10 days apart now, even for 6 large fancy goldfish in 75 gallons! Thank you SeaChem, the beneficial bacteria in Stability are doing the heavy lifting instead of me!

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I try to do a water change once a week, and add Stability each time in the recommended amount. It really seems to help keep the chemistry stable.

Helped me to get my aquarium ready to add fish once the product helped to cycle my tank

Works well

After attempting to cycle three new tanks using traditional means with no success, I did lots of online research and discovered everyone in the forums and YouTube videos touting this product. At my wits end, I decided to purchase this product and give it a try. I am pleased to say that after less than one week of dosing my three tanks with this product (according to the written instructions, of course) they are all now fully cycled and producing optimal parameters according to my Tetra EasyStrips. I am so happy I discovered this product, which I cannot recommend enough to those of you who are looking to quickly and safely cycle your tanks for a healthy and happy aquatic environment for your marine or freshwater fish.

I have STRUGGLED with new tank syndrome in the past, even after cycling the tank for a month before introducing new fish. I finally decided to take a different approach and order this product. I went with Seachem because I have had great success using their Prime solution to dechlorinate the tank, and Im so glad I did! My water parameters have been on point! The second thing I LOVE about this product is, my water is finally CRYSTAL CLEAR! I know I sound overly excited about this review, but if youre an aquarium enthusiast, you know how frustrating these things can be. Ive tried everything from adding carbon filters, using Water Clear products (to no avail), even adding additional filtration to the tank, and NOTHING seemed to work as well as I wanted it to...until now! Id highly recommend this product.

I have used all the other products on the market to cycle aquariums and I was just about to give up when someone told me to try this product! Follow the instructions to the T and you will see you should see amonia, nitrates and nitrites change for the better in about 4 days. I would do 50% water changes on my 90 gallon daily to keep the ammonia below 1PPM and treat the water. I switched from a 55 to 90 and lost ALL my beneficial bacteria and have about 25 community fish in the aquarium. This saved my tank and i have not lost one fish yet. In stores this size bottle is REALLY expensive. I have never seen even the smaller bottles go for anything over 14 bucks! Good buy, good savings, great product, if I could give it 6 stars I would! MAKE SURE IF YOU USE TAP WATER AT WATER CHANGES, THAT YOU TREAT YOUR WATER AND WAIT 15 MINUTES BEFORE ADDING THIS PRODUCT OR TURNING OUR FILTER BACK ON! Cheers!

I couldn’t get my tanks beneficial bacteria to stabilize and the day we added this changed everything! Stability and Prime are all you need!

Doing research on this product I knew going into it this would be very much a hit or miss outcome. For me, it was a miss, but a mild miss so far. I recently set up a 125 gallon aquarium. On a Sunday I filled it and added the initial dose of Stability. On Wednesday I added a large number of live plants (rooted, non-rooted, stem, and floating) in addition to a school of 10 Harlequin Rasboras. On Friday I did a water test and thought all was well, 0 ppm Ammonia, 0 ppm Nitrite, and 5 ppm Nitrate which is the lowest reading the API liquid test will show. I added a school of 6 Peppered Corys. On Saturday I did the last final dose of Stability, giving a full 7 days of use. By Monday however things went backwards with 0.25 ppm Ammonia, and zero for the rest. Tuesday up to 0.5 ppm Ammonia and again zero on the rest. So for me, this product only worked while I was using it and didnt sustain long afterwards. The directions confirm a theory of mine. I believe it may contain a bacteria that does do the nitrogen cycle, but is not able to reproduce in the aquarium. Thus it establishes at a certain level of ammonia production, and slowly dies off. It is the only way I can explain why the instructions direct the continued use of this product with a monthly dose, and a dose whenever any fish are added. I can see adding a dose with new fish, but the monthly maintenance has to be there for a reason... Without that initial small reading of Nitrates I would of said this product didnt work at all and my live plants are the reason Ammonia has stayed low. Since I do have live plants in this tank (and a lot of them) I cant say definitively that this product worked or didnt work so Im afraid this review may not be all that helpful. I just wanted to share my experience and state that using this product and following the directions, I did not get a cycled aquarium meaning constant 0 ppm Ammonia and Nitrite.