I just realized I may have done something stupid...
I have a 5 gallon glass beverage dispenser with a brass spigot. Inside the jar is a 1/2" brass nut that secures the spigot to the jar. Also in the jar are approximately 7 shrimp, a lot of plants, and about 2" of Eco Complete.
Is the brass a danger to the shrimp or the plants? Is there something like aquarium sealant that I could use to cover the metal part? What I'd like is to make a blob (think used chewing gum) to seal off the metal from the tank, but I'm not sure it would stick under water. Will I have to drain and dry the jar?
Any suggestions would be much appreciated!