0.5 phos is really high. Sometimes little things like that get missed. 0.05 is what most must have thought you had posted and that isn't what you're saying. With all that algae and still being at 0.5 means you've got a big PO4 problem. Taking the rock out and putting it in the sun killed all the beneficial bacteria. That most likely sent the whole system into a mini cycle too so the new tank uglies started all over again.
I forgot that when I was using Reef Crystals I would get elevated calcium but 600+ is off the charts. The calcium being that high will drive issues. Have you confirmed the result with another test kit?
There gets to be a point when the alk & cal get into ionic balance and everything in the system seems to just fall into place.
Are you dosing anything like 2part yet or are you just using water changes. Posting all of you other parameters will help too. Taking your water into a store to double check your rest results is a good idea too.
Oh, and are you using filtered RODI water?
I forgot that when I was using Reef Crystals I would get elevated calcium but 600+ is off the charts. The calcium being that high will drive issues. Have you confirmed the result with another test kit?
There gets to be a point when the alk & cal get into ionic balance and everything in the system seems to just fall into place.
Are you dosing anything like 2part yet or are you just using water changes. Posting all of you other parameters will help too. Taking your water into a store to double check your rest results is a good idea too.
Oh, and are you using filtered RODI water?