Here is a little more of a twist for you all, I have two friends of mind that use my RO
water for their Freshwater tanks and one of them also has high Nitrates (the other I have not tested, but her fish just got ick). This is what led
me to believe it was my water.
But as for my tank:
180gals with about 150 to 200lbs or more live rock. I have a protein skimmer and a wet/dry with a 40gal sump. The sump does not have bioballs in it because of the amount of LR
I have in the tank. I mainly use it for my Protein Skimmer, macro filtering and my Phos-ban reactor.
As for changing out or cleaning my filters - I admit that I could do a better job at it....
I do have CC but it is finely crushed (if that makes a difference). I also have some sea weed type planets.
I also am having a problem with hair algae and have lost two yellow tangs in the last couple of weeks.
As for feeding, I feed marine flake food and I would like to believe I do not feed them much. I only feed them once a day and do so sparingly. I always preach to my friends to not overfeed their fish.
meter says that the tap water is 140 and my RODI
water is 3.
I will go and purchase a new test kit (I think I will try the Salifert) and see what I get.
As for my friends tanks - one has ick and the other tank that I have confirmed has high Nitrate, has lost fish lately in it and is having an algea bloom too.
Hope this helps..... Thanks again.