Dual Nozzle Returns Bean Animal Plumbing Kit. This method is used in aquariums to create an ultra-quiet and ultra-safe overflow. You could probably do something similar and drill a hole in the elbow on your 2nd drain and stick some airline tubing in it. A 'Bean Animal' is a 3 drain pipe overflow system consisting of: one p rimary siphon, one primary emergency and a secondary emergency. i have the airline tubing pinched in the overflow grate too, so if water level rises it will plug and create a siphon in case of emergency. on 2nd drain I run a T with a 90 at the end turned up and the top of the T has a cap on it with a hole drilled in it with airline tubing to further silence the drain. When running full blast, the 2nd drain has some flow going down it but nothing crazy. lower down i have the main drain connected to a valve to adjust flow. I run a two drain overflow and dont run any pvc on the main drain in the overflow box, (got the main drain outlet circled in red in the pic). The elbows without a airhole might also create airblocks preventing the 2nd from drain from working? Like others have said, think the elbows would cause issues, likely getting a siphon going in the 2nd drain that then breaks siphon as the water level drops, then water level rises, siphon forms then breaks, repeating again and again. It never restarted and just gurgled all day.Īny ideas from those that run one what I'm doing wrong and how to correct it? Today is the water level in the overflow dropped low enough that the siphon was broken. I don't have the hole drilled in the elbow of the secondary, and can't figure out how it would help or if t's really needed.Įarlier in the week the water level came high enough to enter the emergency overflow, but I never adjusted the gate valve and it seems like the secondary drain never kicked in. The return pump is DC and adjustable and I have it dialed way down so it won't go over the rating of the overflow. my tank is a 600 gallon and I am planning to have 2 15000 lph pumps on it with the head pressure max will be 10000lph each so 20000 lph / 5250 gph max flow rate. The pencil in the second picture is about the water level I think it should be at when running right. So he’s the ordeal basically why is a bean animal a herbie + durso when 2 herbies can accommodate for more flow and would be dead silent. Both drains have their ends about 2" under water in the sump. The middle drain, I assume, picks up any excess from the primary as sort of a check valve to limit adjustments. The primary drain on the left has a gate valve to adjust flow. First picture is essentially what the overflow box looks like with the approximate heights of each. 6mm garden micro irrigation pipe works just as well.I can't get this thing working right and looking for some suggestions. If using clear air line hose, shield it from the light as algae will grow inside eventually blocking it. But each burst is just another show that the siphon is still going. Disadvantage is that you will always get these burst of micro bubbles into the display. use piece of 6mm flexible air line hose to continuously suck out the air bubble as it enters. With 3 overflows, it is thought you are less likely to have a failure due to redundancy (such as when a bubble tip gits in the overflow, or snails, or kori. You can add an old style powerhead that got a venturi attachment. I believe the Ghost Overflow is designed to be a Bean Animal Overflow. To ensure that no air build up happens that will break the siphon at 2 in the morning. Once the air is removed the siphon should run. Again a higher outside T piece would help. But first pout down water on the outside to fill the outer lower portion with the valve open, else you will suck air forever. You can either manually use that new valve to suck out the air bubbles with your mouth until the flow starts. That would give you a bit more space to allow air to accumulate without breaking the siphon. But with the top end blanked off with a female end cap. Or even better, replace one of the elbows with another T piece. The outside T must be higher.Īdd another drilled hole on top of the overflow with a valve, where it goes over the tank. Those air bubbles would then accumulate at the top. Too low, and you will have a long drop down the first pipe, which will lead to air bubbles being pulled around the first bend. The T outside, controls the water inside the overflow pipe.
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