Gnats in the black tank
My brother and his wife spent the last few days in our RV while they visited for some business matters. They left this morning and we went to the RV to collect the sheets and towels and to dump the ta...
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We leave both the gray and black valves closed until we're ready to dump, so you are probably right in that they are coming down the vent pipe. I also leave a few gallons of clean water in the tank after we dump to prevent the toilet paper/poo pyramid from forming. I am certain that I have some of the enzyme treatment in the RV, and I may ride over this afternoon and pour that into the black tank. Of course, I'll be armed with a can of Raid when I open the toilet. They don't seem to be bothering the gray tank. Maybe this is just a one time thing because we have had so much rain this season.
