i have a auto top off machine on a float valve so the leve, is always basically the same level, I dose in the morning and then afternoon I feed once every ither day or 2 I only have a kole tang and a false perc in there and the skimmer pumps are on a diffrent circuit
and also NO nuttin new in there
This might help and then, might not:
Can you place an air valve on the air line inlet and restrict the air slightly (like a Deltec) so that you skim drier? You can then open it slowly if it doesn't overflow again. With the Deltecs, by restricting the air input slightly, it also reduces the size of the bubbles rising up on the neck which is a good thing.
Nick, I would dial it back a little and see what heppens night maybe you just have the water level in the skimmer too high
Funny note: I notice diring the day, nothing - in the morning I come down and there is gunk in the collection cup - no idea why, but thought maybe it should be dialed down and see what happens
If I dial it down anymore the foam will be collecting under the collection cup which in return when it raises in the middle of the night then the scum that was produced during the day will be back in the water