Flow Unbalance...

[Terryz_]

i have setup a sump... my water lvl and sump is unbalance... when my water lvl in main tank increase, my sump tank water lvl will decrease and vice verse... thkz...

[reefer guy]

i believe your water volume is not enough.. happened to me before, not enough water in the sump that it emits small bubbles in the tank... i added more water in the main tank which made the overflow box skim more water thus filling in enough water to my sump....

[Terryz_]

k... i will try.. thkz..

[Tanzy]

What you are experiencing is called flushing not dissimilar from our toilet bowls. The overflow pipe is getting clogged up by air bubbles thus decreasing downward flow so water level in the tank rises while sump level decreases because the rate of return doesn't change. The water will rise to such a point that it produces enough head pressure to force the air bubble down or the trapped air escapes and normal downward flow is restored. This will keep repeating.

To solve it, you will need a durso stand pipe or try to insert and secure an airline tubing in the overflow so the trapped air can escape. The least desirable method will be to incoporate a valve on the downward pipe to trottle back the flow.

[Terryz_]

OMG... chim... will try to understand... thkz...