How fast do Zoas typically grow? I have had mine for about two weeks and would have expected to see some spreading by now. No much but at least a sign that they are growing. I wouldn't expect that they would have over grown the plug yet, but I don't see any signs at all. They get good flow, but aren't getting blow away. Water quality is very good and they get a combination of LED and t5 lights for at least 8 hours a day. Sometimes longer with the t5's. They don't look dead either.