discus tank water testing kits

[gurer]

Good call. API's a solid starting point. My 50-gallon's been stable with it, just remember to shake the nitrate bottles like your life depends on it. Also, keep your test tubes clean—residue messes with the colors.

[murse]

I've had issues with API's pH test being hard to read. Switched to Red Sea's kit, and it's clearer. My Discus are in a 75-gallon with CO2, so pH stability's key. Red Sea's been reliable for me.

[digger]

Never skimp on testing. Lost a tank once because I trusted a bad kit. Now I cross-check with two brands. My Discus are in a 125-gallon, and I use API for nitrates, Salifert for the rest.