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Old 06/21/2017, 11:27 AM   #26
NeverlosT
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It just seems that a geared down motor pulling up a large area sealed piston in a tank that is partially submerged, effectively "drawing up" the water level slowly in the inverted tank, then the piston reaches and passes the height of a hole in the tank leading to atmospheric pressure and all of the trapped water would rush out the bottom. The piston then slowly descends and repeat. Would be relatively easy to make, no air pumps needed, would be silent other than the whoosh of air as the water drains. You could run it at whatever frequency you want for slow/fast surges. The air pump idea does not strike me as sustainable for a long period of time.


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Old 06/21/2017, 11:55 AM   #27
karimwassef
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pistons require seals that I don't know how to design or maintain. They also take up the room for the tank and plunger to actuate. The vacuum achieves the same without mechanical devices. More mechanical parts = higher failure rate.

In turns of actuating the release, it's the same. A sensor opens a valve when the water is high enough.

Keep in mind that the cost of a mechanical implementation is many times that of a tank with a vacuum attached.


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Failure isn't an option It's a requirement. 660g 380inwall+280smp/surge S/L/Soft/Maxima/RBTA/Clown/Chromis/Anthias/Tang/Mandarin/Jawfish/Goby/Wrasse/D'back. DIY 12' Skimmer ActuatedSurge ConcreteScape
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Old 06/21/2017, 10:02 PM   #28
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rather than posting in multiple locations, I'm moving the results to my main thread

http://www.reefcentral.com/forums/sh...589632&page=20


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Failure isn't an option It's a requirement. 660g 380inwall+280smp/surge S/L/Soft/Maxima/RBTA/Clown/Chromis/Anthias/Tang/Mandarin/Jawfish/Goby/Wrasse/D'back. DIY 12' Skimmer ActuatedSurge ConcreteScape
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Old 06/23/2017, 03:37 PM   #29
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I'm confident now that with sufficient internal bracing, I can build a larger system that can surge and countersurge using air pressure. Given the scale though, I might go with wood and epoxy.


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Failure isn't an option It's a requirement. 660g 380inwall+280smp/surge S/L/Soft/Maxima/RBTA/Clown/Chromis/Anthias/Tang/Mandarin/Jawfish/Goby/Wrasse/D'back. DIY 12' Skimmer ActuatedSurge ConcreteScape
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Old 06/23/2017, 05:35 PM   #30
der_wille_zur_macht
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That's crazy. You're moving a lot of water very very fast.


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Old 06/23/2017, 06:23 PM   #31
karimwassef
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Thanks. That's the idea! Check out my main thread. Lots of design options still in flux


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