So I have 2 DOS pumps and am dosing the triton Core7 which requires all 4 pumps. Problem is 3 of them are working great and one is allowing air to bleed back up into the line, so when it comes time to dose that one it doesn't drop any fluid. I replaced all the tubing twice, Made sure all the air was bled out of it, calibrated it, made sure all my fittings were tight (many times due to changing out the tubing). The first pump I purchased a while ago and it is working fine, the problem pump...
Neptune Apex DOS problems
Neptune Apex DOS problems