What are you using to test runoff?

Those color-coded test strips are basically useless if the liquid being tested isn't clear. (colored or tinted water skews the color-coded result)
Rusty Trichome Reviewed by Rusty Trichome on . flush water ph, how low can you go? Hello fellow enthusiasts! Hope everyone is having a wonderful Saturday :thumbsup: yea...i've read as much as I can about flushing etc, but how low can you go with the pH of the water you flush with? I'm asking because it seems to not be working. It comes out at like 7.7 after a couple rounds... wayyy high, and the water going in was 6.5...then I lowered it again to 6, and flushed a couple rounds through it, and the lowest I've got it to is 7.5-7.6 what the hell is the deal? (This is in Rating: 5