im new to owning a fish tank so please bear with me if i dont make any sense but i'll try to explain everything about the tank and the problem as clearly as i can.
Ive got a mini reef set up with an overflow at the back left corner of my tank which has a standard 25mm whole leading into my sump below.
My tank size is 300L and im using a RESUN SP-6000 submersible pump which apparently pumps up to 3000 l/hours. The exit hose at the pump is no more than 1.4m high in to the tank.
The problem im having is my overflow is always empty (water does fall into it but i can't keep it full). A friend of mine has a similar setup and his overflow is full all the way up to the top (same level as the tanks water). Its very loud and enoying and if its not all the way up that part of the tank would get dirty very quickly.
Does anyone know why and how to fix this problem?
I was told that putting PVC
pipe going up would help but the whole point of seting up the tank with the sump is to keep the tank clear/empty without any pipes etc
my friend has tried, ive spoken to aquarium stores and googled the problem and i still can't work it out.
please if some one can help me i would really really appreciate it.
ive attached a photos of the tank with the problem.
thanks again in advance
also just incase you guys needed to know its going to be a fresh water tank.