Last night, I used lots of high-quality nutrients (thin-crust pizza with roasted garlic cloves). Nonetheless, I detected large amounts of H2S activity. In fact, I checked on it many times throughout the night, and it kept on emitting H2S. This morning, I fed it additional nutrients (coffee, cereal). The H2S got worse before it got better, getting really bad at one point. But then that seems to have subsided and it is clearing up, so I think I am in the clear for now. What did I do wrong? Has anyone else experienced this?