[alannathanson]

I followed the instructions and started it with a very slow drip. I did the first nitrate test after about a week and the effluent was at 0. I noticed that if the drip was too fast the effluent nitrate creeps back up but goes back to zero very quickly when the drip rate was reduced.
Its been running for about 10 weeks now and I've had 2 instances of air forming in the chamber. I have the unit on a shelf about 2 1/2 feet lower than the tank and draining into the sump which is about 1 foot lower than the reactor. I don't know why the air formed and any assistance would be appreciated. It is not a major problem but I'd like to eliminate it completely.