I'm a little upset today. I had a pair of week-old developing eggs in my Vent tank, along with a recently laid clutch of 6 in another axil, and both of the older eggs and 4 of the newer ones went bad suddenly. I haven't really had this big of a mold problem yet, and I'm wondering what could have brought it on. The only thing that's different is that I've been keeping a small piece of over-ripe banana on the floor of the tank to keep the flies localized. Could this have caused it? Where can I get some Methylene blue to help the eggs that I pull?