The Sea Bass had been marinating overnight, two large fillets. My son had a test in Karate for his next belt so I had to get Humpty ready to go as we would be eating late. I haven't used my first large BGE much this summer as #2 is at our lake place where we spend as much time as possible. I open him up and there's a fuzzy green stuff everywhere, is this common? Obviously moisture is present, I clean the grate, take out the top ring, hose it off, remove the ceramic grate and remove all damp lump, ash etc. Load it up with fresh lump and start her up, let it heat to around 500 while we are at Karate, wife closes her down just before we get home, cook the Sea Bass (marinated in Italian dressing and light Soy Sauce) and scarfed - the fish was awesome, light and flaky, the kids loved it too. One of the best meals I've cooked to date. I figured just washing with water and heating it up good and hot for an hour is enough - comments please.