allan.mcdougall
New Member
I have just bought a 2nd hand Juwel 180 and quickly transferred fish and plants form a leaking older tank, quite successfully so far. I am using my external aquis canister but tried starting up the internal filter. The tank is filled to just below its outlet. Once the air bubble sstop, the flow of water is very vigourous indeed (Too much?) but then the volume of water in the filter drops quickly and it would seem that the powerhead is not receiving water quickly enough to replenish itself. I cant see any blockage to the inlet valves of the filter case (low down on the side) Any ideas? There asre no weeds or gravel on the side of the case. The bottom of the case is in the gravel but has no inlet holes on it anyway. Thanks for suggestions