Aquarium Co-Op Multi-Test Strips

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  • Measures pH, Nitrite, Nitrate, GH, KH, and Chlorine
  • Results in 60 Seconds
  • Available in Two Sizes: 25 and 200 Tests
  • Laminated Comparison Card

Frequently testing your water quality is one of the keys to successful fishkeeping. We developed Aquarium Co-Op Multi-Test Strips to be fast, comprehensive, and accurate — which makes testing your aquarium water easier than ever. Measure nitrate, nitrite, hardness (GH), buffer (KH), pH, and chlorine levels in just 60 seconds.

This test helps you understand your readings with helpful information and suggestions on the laminated color chart we've included. We created these to make your life easier and save you money when it comes to testing your water.

Customer Reviews

Based on 870 reviews
Chip B. (Bothell, WA, US)
Great, and inexpensive!

These have hardness and alkalinity tests on them, which seem to be accurate. They are SO much easier than the "wet" test solutions, and cover everything I normally test for. No cleanup or counting drops.
If you buy the 200 pack they cost less than 10 cents each, so you can test very frequently.
Seriously, these are a great product at a great price!

Andrew B. (Seattle, WA, US)

Aquarium Co-Op Multi-Test Strips

Jack S. (Mason, OH, US)
Great Product!

These strips are so convenient for how cheap they are! It’s so nice that they test for so many different things

John L. (Sebring, FL, US)
Really do the job

This is my second order of the CoOp's test strips. I'm very pleased with the convenience and quick results. I still had quite a few left from my last order of two years ago, but it was time to get a new supply I was getting colors to rival the NBC peacock and I know that wasn't right! I ordered the smaller pack and I will see long that lasts.

Betsy (Winston-Salem, NC, US)
These test strips confirmed what I suspected.

I was having trouble with my aquarium water PH but was not sure why. The Aquarium Multi Test strips confirmed we have hard water. Thanks to the GH & KH tests. Hopefully, I can fine the cure soon!