I would guess you are around 7k gallons and 37oz should have only added 40ppm of CYA.
Lighting makes a huge difference. It needs to be bright, but without any glare on the surface. How many times did you pour the sample back and forth between the mixing bottle and the view tube? Even after years of practice, I seldom get the same reading 3X in a row.Thats what I was aiming for![]()
Hmmm.... You say the water is crystal clear? And I can't fault those readings... Have you checked your Phosphate levels? Maybe you need to buy some Phosfree"Back from my trip and here are my numbers. I think everything looks good, water is super clear. Any suggestions or am I good to just maintain!
TC 6
PH 7.5
FC 5.5
CC .5
CH 50
TA 70
CYA 40