Hi guys. I've been keeping freshwater tanks for years and jumped in the world of reef tanks. I have a 29 gallon with 20lbs of live rock and 20lbs of live sand. I mixed my own water and I have a salinity of 1.025 according to my refractometer.

The problem is, I used TAP water. Yes, tap water. I know its a big mistake. I set it up 2 days ago and ghost fed the tank to start the cycling process. Anyways, should I empty the tank and fill it up with RODI water or should I wait for the cycle to be completed and then do a massive water change (50%) followed by weekly 15% water changes every week once live stock is in there?

Thanks in advance.