Actually it took almost an entire day. Alot of the rocks that I had in there already were covered in anthelia that was growing wild over everything. So I took the rocks out, (alot of them had corals still on them), and soaked them in fluke tab/saltwater mixture for about 45 minutes. This worked like a charm, killed all the anthelia and I just had to scrub them off a little with a toothbrush.

Then restacked with the new rocks and topped it off with the corals.