Andy Pierce
Member
Here's mine with an illuminated white background. I suspect yours would look a lot like this if you were looking through it at an illuminated white surface. I think your CO2 is probably pretty good!Just tried the colour grab in-tank but no white background. CO2 off since 4.30 with Hue 115 but this changes if you move around the spotting circle that I see you can adjust in size. PH read with meter was 7.1. Anyway the good thing is that it tells me the colour is green