jlinzmaier
Premium Member
I'm planning a 300 gal build and I'm incorporating a closed loop system powered by a sequence hammerhead. Need help with the overflow plumbing aspect.
Tank will be approx 96"X36"X24". My plan is to have an overflow at each end which will be approx 6"X24"X20". The overflow will be built onto the end of the tank and not built inside. Total length will be 108". I planned on having the closed loop pump fed from both overflows. I'm planning on having two 2" drains which open approx 2-3 in above the bottom of the overflow box and they'll be "Y"ed together just before the return pump. To feed the sump, I'd have two 2" drains (one at each end which) extending up approx 2" below the water surface level. The closed loop drains would be approx 14-16 in below the sump drains which should keep the closed loop system continually fed without any unwanted air intake.
The hammerhead puts out approx 5300 gph. Are two 2" intakes "Y"ed together near the pump enough to keep the pump fed adequately to prevent cavitation?? Would 3" drains be better??
Anyone see any flaws to my plumbing thoughts. Is there anything special I need to keep in mind when having an overflow at each end with a sump drain and closed loop drain in each??
Is there any risk of the closed loop pulling too much from one end(say for example some debris partially blocks one of the intakes) and causing an imbalance in the water level between the two overflow boxes?? This is my main concern, but as I think it through, if there is adequate drainage from both sump drains they will maintain the level of the water inside the overflow box correct???? The closed loop will simply continually be pulling from the bottom of the overflow box correct???
Any thoughts??
Jeremy
Tank will be approx 96"X36"X24". My plan is to have an overflow at each end which will be approx 6"X24"X20". The overflow will be built onto the end of the tank and not built inside. Total length will be 108". I planned on having the closed loop pump fed from both overflows. I'm planning on having two 2" drains which open approx 2-3 in above the bottom of the overflow box and they'll be "Y"ed together just before the return pump. To feed the sump, I'd have two 2" drains (one at each end which) extending up approx 2" below the water surface level. The closed loop drains would be approx 14-16 in below the sump drains which should keep the closed loop system continually fed without any unwanted air intake.
The hammerhead puts out approx 5300 gph. Are two 2" intakes "Y"ed together near the pump enough to keep the pump fed adequately to prevent cavitation?? Would 3" drains be better??
Anyone see any flaws to my plumbing thoughts. Is there anything special I need to keep in mind when having an overflow at each end with a sump drain and closed loop drain in each??
Is there any risk of the closed loop pulling too much from one end(say for example some debris partially blocks one of the intakes) and causing an imbalance in the water level between the two overflow boxes?? This is my main concern, but as I think it through, if there is adequate drainage from both sump drains they will maintain the level of the water inside the overflow box correct???? The closed loop will simply continually be pulling from the bottom of the overflow box correct???
Any thoughts??
Jeremy
