Haven't checked for stray current. Have done an ICP in the past, and nothing was off except Ca being 600 or so. RODI water is straight 0 across the board. Out of the tap the phosphates and phosphorus from the fire retardant in our water is like way beyond what the Feds say is safe.
I have the 2 red sea WAV's running at about 50% because any more than that blasts the sand to the back of the tank. The pumps are at the top back wall of the tank.
My bad--didn;t want to itemize all the coral I've killed off....