Who has a properly dialed-in Marineland Corner Overflow ? I've got a 120 gal, and I'm having issues getting the overflow dialed-in. It's been good for 4 months, but in the past 2 days, my water level kept creeping up to a dangerous point. I made adjustments to get the water level back where I wanted it to be. But, now I have an extremely noisy overflow.
After hours of tinkering, I realized that the "overflow cover" (it's on the tank-side of the overflow wall) had some algae on it which might be restricting flow from tank-side to corner overflow, so I cleaned that. It made small improvement.
At this point, I can't set a reasonable water level in the tank without having a very noisy overflow. If I increase the water level so that the overflow gets quiet, the water level continues to rise, very slowly. I stop the rising water level before anything spills out of the tank, and we begin adjusting everything again.
I have ball valves in the tank-to-sump and return-pump-to-tank lines, so that's where I'm making adjustments. My sump is in the basement, so water travels a fair distance (approx. 15 feet). I have an Iwaki return pump -- plenty of pressure. In fact, it's dialed down to 75% through the return-pump-to-tank ball valve.
Where do you have your water level at with this type of overflow ? I thought the 'ideal level' would be so that the water flows through the slots in the weir that's at the top of the overflow. I think that the water level is too high when water begins to flow over the top of the weir.
Pictures of where I am now:
Front View - This is what I consider to be the 'ideal' water level:
Top View:
Side View - not enough water in the corner, therefore it's very noisy:
Any thoughts ?
---Frank
After hours of tinkering, I realized that the "overflow cover" (it's on the tank-side of the overflow wall) had some algae on it which might be restricting flow from tank-side to corner overflow, so I cleaned that. It made small improvement.
At this point, I can't set a reasonable water level in the tank without having a very noisy overflow. If I increase the water level so that the overflow gets quiet, the water level continues to rise, very slowly. I stop the rising water level before anything spills out of the tank, and we begin adjusting everything again.
I have ball valves in the tank-to-sump and return-pump-to-tank lines, so that's where I'm making adjustments. My sump is in the basement, so water travels a fair distance (approx. 15 feet). I have an Iwaki return pump -- plenty of pressure. In fact, it's dialed down to 75% through the return-pump-to-tank ball valve.
Where do you have your water level at with this type of overflow ? I thought the 'ideal level' would be so that the water flows through the slots in the weir that's at the top of the overflow. I think that the water level is too high when water begins to flow over the top of the weir.
Pictures of where I am now:
Front View - This is what I consider to be the 'ideal' water level:
Top View:
Side View - not enough water in the corner, therefore it's very noisy:
Any thoughts ?
---Frank