i am taking this task on with caution. i had my rock in my sump with 100g of water brewing for 2 weeks or so. i test for ph, alk, ammonia, and nitrite almost daily making sure everything is good... for now its just a really really clean tank. my plan is to add my corals which have been living in a crappy system in over the next week(mostly softies, some lps) and see how everything does for another 2 weeks then add my favorite/less hardy pieces that i have in my 29g now.