Zinc and copper - REEF2REEF Saltwater and Reef Aquarium Forum
So I had an ATI ICP test done which checks the RODI water as well as the tank. Results as follows: TANK zinc: 90 ug/l copper: 7 ug/l RODI zinc: 4.4 ug/l copper: 1 .7 ug/l I have replaced all the equipment now in the tank, heaters, powerheads, skimmer, lights, ATO system. I guess the RODI is the prime suspect. It still shows 0 TDS (got a new TDS ...