I've had my sw
tank for a couple of years and my calcium level is 450. I use RO
water and Oceanic salt. I helped a friend set up a sw
tank 6 months ago. He is using RO
water and Oceanic salt. He tested his calcium and he says it is 800. Is that possible? I asked him to give me a sample so I can test it. What can I tell him to do to lower the calcium? Does he have to lower it? Right now his tank is FOWLR
but he eventually wants to get coral and maybe an anemone. Any help would be appreciated. Thanks!