JBL ProAquaTest KH & Refill

Finally got consistent readings after switching to this kit—the color change is so much easier to read than the strips I was using. Takes just a few drops and I can finally trust my KH adjustments.

After struggling with algae for weeks, this KH test finally let me dial in exactly the right alkalinity—the refill pack makes it super convenient to keep testing regularly. The color chart is clear and easy to read, even in dim aquarium light.

I was worried my tank's KH might be off, but this test kit gave me crystal-clear readings in minutes. The refill will definitely be useful for regular checks.