That's really high, hard to say why your tank would be that high. I know my tap water is around 800, my RO water is around 60 and my RO/DI water is less than 10 but we have really bad tap water. The tap water in the neighboring towns is in the 300's to start but why you would have 6100 x 10 doesn't seem right or it's picking up something else.
_________
90 gallon with 26 gallon sump/refugium, 2 x 250 MH lighting, 100lbs live rock, 1 - yellow tang,1 damsel, 1 - cleaner shrimp, 1 - coral banded shrimp, 3 - emerald crabs, 2 - porcelin crabs, 6 - peppermint shrimp, 1 - green ricordia, 1 - toadstool, 1 - brittle starfish, 1 - sand sifting star, 100's baby feather dusters,Ass mushrooms, frogspawn, xenia, 1 clam,
6 - Leather coral, Green star polyps,Lime green/orange button polyps,1 huge carpet anenome,various snails/hermit crabs |