JoelATX Posted September 6, 2021 Share Posted September 6, 2021 Hi All, I decided to downsize my tank, from 90gal tank+40 sump, to a 40gal AIO. I brought several large rock pieces to the new tank. These were rinsed with new saltwater, and move quickly to the new tank. About 25% of the gravel was washed in fresh saltwater, the other was cleaned with tap water. I also moved a 3x8x1.5 piece of MarinePure into the return pump area. When can I add the fish and remainder of the corals? Quote Link to comment Share on other sites More sharing options...
Timfish Posted September 7, 2021 Share Posted September 7, 2021 Test your ammonia, pH and alkalinity but with all the stuff from your existing tank there's a good chance you've skipped the initial cycle. Quote Link to comment Share on other sites More sharing options...
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