Reef ChemistView Badges
R2R Excellence Award
- Sep 5, 2014
- Reaction score
Yes, how far away is “away”? I am testing as far as my probe reaches about 3 ft away.
Two issues are out of the tank water to avoid ground loop issues, and cords away from lights and things.
You are avoiding the former, maybe not the latter.
But you are measuring the outdoor and and indoor air aeration tests this way? And when you take tank water out and measure it that same way, right away, you get low levels like 7.5 still?