Arxpreacher Posted July 15, 2021 Share Posted July 15, 2021 Totally cleaned and re-stablished a 55 gal Community Aquarium; currently being cycled. I have used API testing chemicals in the past but decided to purchase the AQ-COOP multi test strips. They arrived and I followed the instructions and after trying three strips, they remained the same, no color change, no reaction to the water in the aquarium. Any suggestions? Link to comment Share on other sites More sharing options...
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