I used diluted bleach in a rubbermaid stock tank for a few weeks to prep some pukani dry rock. Soaked it in tap water for a few weeks, then added heated saltwater with some food to start the cycle. I added it with some live rock from an old tank, and added fish and corals right away, and it was fine. Didn't really get any algae.
Here is a video from BulkReefSupply if you're interested. They have a bunch of videos about curing rock and lots of good info. Pretty sure they say that Marco dry rock is clean and doesn't need the bleach method FYI though.
Here is a video from BulkReefSupply if you're interested. They have a bunch of videos about curing rock and lots of good info. Pretty sure they say that Marco dry rock is clean and doesn't need the bleach method FYI though.