Ok, I havent added anything to my tank, it just suddendly does it with no apparent reason. So no dosing, feeding, large water level changes in the skimmer area...
Well after reading most of the replies on this thread I might have figured out what my problem could be, please tell me what you guys think because Im risking of damaging my office wooden floor and dont know what else in the case it could overflow all night or something like that.
I had the volute white thing on the red dragon powerhead closed all the way in leaving it open for the most water possible and least bubble production, making me close the output valve up to 70% or 80% to get the water level in between the skimmer body and lowest part of the collection cup.
Now this volute closed all the way and output valve closed almost all the way also makes the water level inside the output valve too high giving it very little play room and distance between the water level inside the valve and the air inlet for the pump. Now with the water level too high inside the output valve any hiccup on the pump, skimmer body or I any other reason could make the pump suck water in trough the airline hose and make it go nuts shooting a large water volume trough the skimmer with absolutely no bubbles at all...
Could this be my problem
Now I have the white volute opened about 3 to 4 turns and the output valve opened around 50%, the water level inside the body is around 3.5" from the top of the skimmer body.