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I have a Marineland 225 with dual corner overflows plumbed in their standard Durso configuration, including hole with small vinyl tube on top of drainpipe cap for full siphon break.
Last couple of mornings when I come down to view the tank, I have discovered that one of the overflows is "stalled" and not draining, pushing all the water to the other overflow (which thankfully does not stall), although with approximately 1000+gph being pushed to one overflow, it has difficulty keeping up.
After I "reboot" by turning off the return pump, allowing the water from the overflows to drain into the sump, everything goes back to normal with both overflows draining properly.
What is causing this? If the overflow was clogged, I would not expect it to go back to draining normally after turning the pump off, draining, and back on.
I understand the small hole on the top of the drainpipe is a siphon break, could it be implemented wrong and is somehow causing me issues? If the water level in the overflow rose over that small hole, would it cause it to "stall"?
Also have to mention that the overflow that "stalls", also tends to vary the water level and will "flush" often.
Last couple of mornings when I come down to view the tank, I have discovered that one of the overflows is "stalled" and not draining, pushing all the water to the other overflow (which thankfully does not stall), although with approximately 1000+gph being pushed to one overflow, it has difficulty keeping up.
After I "reboot" by turning off the return pump, allowing the water from the overflows to drain into the sump, everything goes back to normal with both overflows draining properly.
What is causing this? If the overflow was clogged, I would not expect it to go back to draining normally after turning the pump off, draining, and back on.
I understand the small hole on the top of the drainpipe is a siphon break, could it be implemented wrong and is somehow causing me issues? If the water level in the overflow rose over that small hole, would it cause it to "stall"?
Also have to mention that the overflow that "stalls", also tends to vary the water level and will "flush" often.
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