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

It works and that’s all I need. I trust Seachem and have been using their products for years. I never lost a single fish while cycling my tank with Seachem stability. Make sure to buy Prime because it will help you with ammonia spikes. Fish in cycle isn’t recommended but it can be done with right knowledge and right products.

Stability helped me start and establish a brand new 55G tall from scratch with only one fish departing to the Golden Pond in the Sky (loach swam up the intake into the filter impeller...messy). From day one I did daily testing with the API kit and made an Excel spreadsheet of the data. There were very small, irregular ammonia spikes at the 2nd/3rd week, but not into the "danger" zone and slowly decreased to 0ppm by the end of the 4th week. Nitrites and nitrates increased from the 3rd week and then hovered at a "very acceptable" range below danger zone and then gradually decreased to ~0 ppm for nitrites and ~20ppm for nitrates by the 5th/6th week. The results I got from the test kit were evaluated against a U of Florida's chart (I am a bio major) of Total Ammonia Nitrogen Toxicity (using pH and water temperature as the other parameters), and were in the range that is deemed not dangerous to FW fish for a short term period. With the results of these API test and my personal experience, I would definitely recommend and have been using Seachem Stability as a "jump start" product to establish the important biological filter in a FW aquarium or to boost or supplement the already existing bio filter in an established tank. For those interested about my experience, see below for in depth details.Products used:-Seachem Stability-Seachem Prime-API FW Master Test Kit1st week:IMPORTANT: FOLLOW THE DIRECTIONS FOR THE FIRST WEEK'S DOSING SCHEDULE BASED ON YOUR TANK'S VOLUME.Added 7 Zebra danios. These are hardy fish and can survive a newbie's foray into fishkeeping and hopefully any mistakes I make.First day: One capful( 5mL) for every 10G of NEW WATER, so 5 capfuls.Days 2-7: One capful for every 20G of water, so ~3 capfuls EVERYDAY. Added 4 black Java loaches/khuli loaches on day 3.Note: Directions says you can add fish/inverts immediately and at any time as long as you follow the all-important dosing schedule above for the FIRST week only.NOTE: After first week, one capful for every 20G once a month, or with each water change, or introducing new fish, or medicating.2nd week:Added Dwarf gourami and 3 Albino cories. Did 25% water change with Prime, then dosed with 3 capful of Stability, which is the dose for ~60G.3rd week:Added Bristlenose pleco. Did 25% WC with Prime, then dosed with 3 capful of Stability.4th week:Added 3 more Albino cories. Added 1teaspoon/10G API Aquarium salt to counter increasing ammonia, nitrites and nitrate spikes.5th week:Added 5 more loaches. Did 25% WC with Prime, then dosed with 3 capful of Stability.6th week:Added 2 Amano shrimps. Did 25% WC with Prime, then dosed with 3 capful of Stability.4 months later:3 Bamboo shrimps, 2 Amano shrimps, 9 Loaches, 6 Cories, Dwarf gourami, 7 Danios, BN pleco, plants. All fish/inverts growing and healthy. I now only dose 1 capful of Stability with each 25% WC, as my biofilter is now well established and API tests show it doesn't need 3 capfuls for every WC. Thanks Stability!

Excellent Product

Big bottle lasts for a long time, always works great, would be better if it had a pump attached to it.

i think it works great lol no issues of course and my fish are doing very well!

No longer into aquariums

This is amazing perfect size to last a long time really helps the water quality clear color so if you spill there will not be any stains. Just add to take and dilutes in the water.

Very practical