Is there any method you guys know of to control mold in formicariums? I'm having serious black mold issues in almost all of my test tube colonies, and I'm not entirely sure why. It's getting annoying for me, honestly, and I'm sneezing way too much to say the least.
On that note, I have melafix and pimafix that I use for aquariums. Would a dilute solution of either of these (tea tree oil and west indian bay tree oil dilutions) help more than hurt? Has anyone tried these oils?