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Caleb Chapman
> 3 dayTotally useless when cycling a tank when you have high nitrites, can’t tell a lick of difference
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Custom Ken
> 3 dayThese are just great test kits, I have been using them for many years.
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J. Lowrie
> 3 dayWhat more is there to say? It tests aquariums for nitrite. Actually you do the testing and take a small water sample, add drops of reagent and match colors. If you find nitrite you need water changes. Pretty simple stuff.
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Stephen Brinson
> 3 dayGreat test kit for the money.
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Damon2Damon
Greater than one weekIf youre like me and youre always starting up new tanks this is a must have item. I like to do fishless cycles and its important to test for amm and nitrite which are extremely toxic to fish. This item is easy to use just add 5mls of tank water 5 drops shake and wait 5 mins the color chart is easy to follow and accurate. I can only find this test kit online and the price is always great with fast shipping.
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B CB
> 3 dayWorks great. More accurate than strips
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Henry Lew
12-06-2025works great, looks great, very happy with purchase
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larry walworth
11-06-2025needed to maintain fish tanks
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michael
> 3 dayReplacement for API Master Kit
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Mel O
> 3 dayTest seems to work, showed varying levels as new tank was cycled. The small glass tube warped somehow when I didnt empty the solution. Either chemical reaction or from too much exposure to sunlight on window sill? I dont know but it crumbled into small shards. Pretty annoying.