I have a potential problem with this tank I look after. It uses Megaflow overflows with durso standpipes. When we set it up, I guess the floor was a hair unlevel(by about 2mm off on a 6 foot length) and more water seems to be flowing in one overflow than the other. At first, i thought the air flow was blocked on the one cap, but that was not the case.
Well, the problem is, the one durso is making gurgling noises as air is getting into it and the water level in that overflow is much lower. Thing is, these durso caps have these holes drilled into them where the cap elbow meets the standpipe, i guess in case the screen ever got clogged, the holes would act as the drain. So anyways the water level never goes above these 3 holes and actually drains through them instead of going in the screen of the durso elbow....
So, how would I go about fixing this. The drain lines have no valves so I cannot slow the flow on the one overflow. Should I try and find a durso cap that doesn't have thes holes drilled?
suggestions?
thx
note, in the link pic you can kinda see these holes in the elbow unit of the durso...
http://akamai.edeal.com/images/catal...3039906med.jpg
link to larger pic:
All-Glass Mega Flow Overflow Accessory Kit at Big Al's Online