Have a fungus gnat problem beginning and idea like to clear that up pronto before it effects my plants in hydro. I've tried gognats and had it coagulate in the water (maybe it's shelf life was up idk?) Well it didn't work well and just caused clogging ect. But my question is how much of a chunk of those mosquito dunks should I use per gallon for hydro? Usually around 9 gallons of solution and gets supplemental drip while roots are suspended in the water? Anyone have experience with mosquito dunks? Anyhelp word greatly be appreciated, I dnt want to over do it let alone under do it and have it not work.... thanks