Dosing in a future 20 gal reef

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A siphon break helps mostly with reverse flow in our applications... If he's already got a pump sending water down to a sump, there's no way to install a siphon break...
Using pvc tubing to supply the flow of water from the display to the sump, drill the relief hole where you want the siphon to break. Once the water level in the display decreases and reaches the relief hole, air will be drawn in and the siphon breaks. In normal operation, a small stream of water exits the relief but remains silent as it is under water.
 

EeyoreIsMySpiritAnimal

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Using pvc tubing to supply the flow of water from the display to the sump, drill the relief hole where you want the siphon to break. Once the water level in the display decreases and reaches the relief hole, air will be drawn in and the siphon breaks. In normal operation, a small stream of water exits the relief but remains silent as it is under water.
Good point. It's way past my bedtime, lol.
 
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TheyGaveItToMe

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Using pvc tubing to supply the flow of water from the display to the sump, drill the relief hole where you want the siphon to break. Once the water level in the display decreases and reaches the relief hole, air will be drawn in and the siphon breaks. In normal operation, a small stream of water exits the relief but remains silent as it is under water.
It doesn't matter anyway, because two identical pumps don't pump water up and down at the same rate. Because one is fighting head pressure, while the other is being assisted by gravity.
 

TheyGaveItToMe

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No wait you don’t get it, I meant taking 2 pumps like the one in this photo and using tubing to direct water down to the sump and up. It will have a hob, heater and a refugium with live rock,Chaeto,crabs,shrimp, and a snail.

View attachment 2926062
It is next to impossible to achieve. These pumps are too small to begin with. Secondly, they will not pump at the same rate. It is almost like you are trying to do everything the hardest and least cost effective way possible. Get and All-in-One, or an All-in-One insert for a standard aquarium.
 
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mdb_talon

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No wait you don’t get it, I meant taking 2 pumps like the one in this photo and using tubing to direct water down to the sump and up. It will have a hob, heater and a refugium with live rock,Chaeto,crabs,shrimp, and a snail.

View attachment 2926062

I get it. It dont work. Thats just the reality. You have to have drilled or a siphon. If you spend a lot of time and effort you can make it worth with multiple pumps... until one starts going slower and it floods. Or until one pump fails and it floods. The end result if you rely on an exact pump flow to avoid a flood.... is that you will end up with a flood.
 

Jason Scalise

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I get it. It dont work. Thats just the reality. You have to have drilled or a siphon. If you spend a lot of time and effort you can make it worth with multiple pumps... until one starts going slower and it floods. Or until one pump fails and it floods. The end result if you rely on an exact pump flow to avoid a flood.... is that you will end up with a flood.
agreed. No two pumps flow at the exact same rate. Even 0.001% difference is by definition, unbalanced and will lead to one of the two tanks flooding....with cosmic certainty. In fact, if you wanted to make a fool-proof flood machine that works every time, that is how one should do it. Just sayin'...
 
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EeyoreIsMySpiritAnimal

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Something similar to this? I'm sure you can build one a lot cheaper :)

 
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