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Seachem Stability 500ml

by Seachem
4.5 out of 5 stars 168 customer reviews
| 10 answered questions
List Price: $24.10
Price: $13.52 & FREE Shipping on orders over $49. Details
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  • Superior tank starter
  • Can't overdose
  • Fresh and saltwater use
18 new from $13.52
$13.52 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

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Product Details

  • Product Dimensions: 7.6 x 2 x 1.5 inches ; 1 pounds
  • Shipping Weight: 1.1 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B0002APIIW
  • Item model number: 67101230
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (168 customer reviews)
  • Amazon Best Sellers Rank: #1,759 in Pet Supplies (See Top 100 in Pet Supplies)

Important Information

Directions
Use 1 capful (5 mL) for each 40 L (10 gallons*) on the first day with a new aquarium. Then use 1 capful for each 80 L (20 gallons*) daily for 7 days. Fish and other aquatic species may be introduced at any time as long as dosage is maintained for 7 days. For optimum biofilter performance use 1 capful for each 40 L (10 gallons*) once a month or with each water change and whenever introducing new fish or whenever medicating an aquarium.

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Customer Reviews

Top Customer Reviews

5.0 out of 5 starsFinally got my stepson's tank going
By T. Jaeger on January 18, 2014
Verified Purchase
My stepson got a 55 gallon tank for christmas, and I had been trying to get it to cycle for some time before he moved his fish into it, using added ammonia. No luck, so the fish were moved over and we used Seachem Prime (another exellent product) and continuous water changes to keep the ammonia levels down. Two weeks and a couple of bacteria products later, we were still getting 2ppm ammonia and 0 nitrites and nitrates. I ended up getting Stability and the same day the ammonia went down to .25ppm and we finally got readings on the nitrites and nitrates. It has worked very well for us.

WORD OF CAUTION: If you get this or any other live bacteria product, make sure you do one day shipping (at least if it is summer or winter). The temperature extremes during average shipping can kill off the bacteria, leading to this being as useful as a bottle of water.
5 Comments 21 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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5.0 out of 5 starsGreat product
By L. Hayward on December 29, 2010
A must-have for tank setup and water changes. I've been using stability for years, and it's one of the best "good bacteria" products out there. Highly recommended! Just be sure to read directions, have a healthy tank to start with and be educated as to how nitrates, nitrites and ammonia levels work in a tank cycle. With good information and a great product like this, you can't go wrong. I also recommend Seachem's Neutral Regulator and a spit of Stress Coat for every water change.
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4.0 out of 5 starsIt works! (Or it doesn't)
By Dawn Bustanoby on June 13, 2012
Update: It works...or it doesn't. My initial review stated that it worked on multiple salt water tanks for me, which it did. But then a year later I tried it with a fresh water tank and it didn't work (cycled through ammonia, nitrite, and nitrate just as if I hadn't used it.) Tried again with a salt water tank and it failed again. Both of the failures were with a bottle that had been open for over a year, so it's quite possible that it has a limited shelf life. So if you're going to try it, I'd suggest buying the smallest bottle that will treat your tank and use a new bottle every time. And err on the side of safety and don't add livestock until you're sure your tank has cycled, and then add slowly.

Original review: I have used this product multiple times to start quarantine tanks and hospital tanks (marine tanks, with both fish and coral.) It works; it's worked every time. I've never had my tanks spike ammonia or nitrite when using this product as directed. I'm amazed how many websites & forums claim that no such product exists. Also, the reviewer who says that you have to keep using it is wrong, for so many reasons (the bacteria don't get used up and die, they multiply, just like all bacteria, and also, all of the bacteria that would normally be in your tank if you cycle the traditional way will also still exist in the tank.) I've never used the product beyond 7 days, not even with water changes, and my tanks have never "crashed" when I stopped using this. I would, however, consider stocking the tank lightly, and gradually building up stock.
2 Comments 18 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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5.0 out of 5 starsExcellent product
By Reno Dad on July 19, 2010
I started a new 36 gallon freshwater tank and used SeaChem Stability to kick-start it. Added a few fish immediately (4 danios, 4 cherry barbs) and things went perfectly. Water is balanced, clear, and clean- my fish are thriving. Definitely helps reduce tank shock. You still need a dechlorinator and the best filter you can afford; I use a Rena Filstar XP2 and am very happy. Avoid overfeeding and use a good quality food (NOT TopFin!!!).
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3.0 out of 5 starsIneffective compared to Tetra SafeStart
By Matt Cham on September 14, 2014
Verified Purchase
I have been keeping tropical fish for more than 20 years and operated a commercial tropical fish farm several years ago. Sometimes I run into the situation when a new tank must be cycled rapidly in order to accommodate fish.

In the vast majority of occasions, Seachem Stability has failed to cycle my tank despite following instructions. I even tried using triple dose daily for 7 days and nitrites would not change at all. The competing product Tetra SafeStart would work within 24 hours.

In my desperate attempt to see this product work, I poured another bottle of Stability (poured entire 500 ml) bottle into a 20 gallon tank, and after 2 days nitrite was still high at 0.5 ppm, as if I had not done anything at all.

I am a big fan of Seachem Prime but after trying four bottles of Seachem Stability 500 ml, my conclusion is that this product is no better than a placebo. It has zero effect on nitrite.

I cannot attribute these observations to receiving a bad batch because each of 4 bottles were purchased separately. Success rate with Seachem Stability: 0 out of 4 bottles. Success rate with Tetra SafeStart: 7 out of 7 bottles.
6 Comments 11 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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2.0 out of 5 starsDidn't Work for Me...
By J. J. Burtch TOP 1000 REVIEWER on January 25, 2016
Verified Purchase
I used Seachem Stability to try to get the cycle going on a 10 gallon aquarium with an axolotl in it. I'd been struggling to get the cycle going with the juvenile axolotl, and figured I'd give this a shot.

Followed the instructions to the T, even purchased a small syringe to make sure I was putting exactly the amount that was necessary in the tank each time.

After two weeks of use, my aquarium was still showing no signs of being cycled...it hadn't even established any nitrites...let alone any nitrates. The ammonia level would be the same as it was without any Stability from before I started using it.

Maybe I just got a bad bottle, but I had no success with this product at all. Two stars because it didn't do anything really negative to my aquarium, it just didn't do anything positive, either.
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Most Recent Customer Reviews

5.0 out of 5 starsCheaper than in Store

Works well and is cheaper here than in a pet store. Works as intended.

Published 6 hours ago by A. Laren
5.0 out of 5 starsFive Stars

Good quality

Published 11 days ago by ryan
5.0 out of 5 starsThe best for cycling tanks!

The best product for cycling tanks in my opinion.

Published 12 days ago by Christopher Dahl
5.0 out of 5 starsCycled my tank fast!

I used this to fishless cycle my tank, which took about five weeks. Months later without adding any more Stability after the cycle completed, my tank is still thriving and keeping... Read more

Published 13 days ago by Jenna McMaster
5.0 out of 5 starsHelped out during moving our tank to a new home

Purchased this as an aid to help cycle my tank after we moved to our new home. Now I did not cycle my tank from new with stability as the tank was established before the move and... Read more

Published 15 days ago by Benji K
2.0 out of 5 starsNeeds to be used every day for a week as ...

Needs to be used every day for a week as opposed to others (3 days or 1 day) for setting up a new tank, making u go thru more product. Price is relative to aforementioned point.

Published 19 days ago by crystal scott
5.0 out of 5 starsFive Stars

Great product.

Published 1 month ago by Mitzy
5.0 out of 5 starsIt has worked for my 20gal

I had no luck with other brands, then this was recommended to me. I have a 20gal and the only fish that would survive before using this was my female beta, she's tough as nails. Read more

Published 1 month ago by J. H.
5.0 out of 5 starsWorks really good, these products are the best in my book

Works really good,these products are the best in my book,been using them since the 80s

Published 1 month ago by Amazon Customer
1.0 out of 5 starsOne Star

waste of money

Published 1 month ago by DRD

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