I have read that kh should be 7-11 so figured 10 would be ok. And the magic 420 is ideal. I had been running this tank with a kh of 15 for about 2 years. Since i've got it down the corals look alot fuzzier. I picked up some Kent Turbo Calcium and will be slowly bringing up the calcium. I can't adjust my kalk reactor at all. It's a SWC. I have kind of a weird setup for it. I have my ATO setup up so when it turns on the pump for my fresh water it also turns on the kalk reactor. So i have one resevoir of fresh RO water for the kalk reactor (IO bucket) and another resevoir with fresh RO water (garbage can) that is mixed with epsom salts. So 2 lines going in to my sump for top up. Added pic if confusing.
