Ross B Reef'n 170 Gallon & Fishroom Megabuild

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Ross B Reef'n

Ross B Reef'n

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It's not all good in the neighborhood tonight. Connected the water changes pumps for the freshwater. No leaks, okay, great! Plugged a pump in for a test run. Works great! Awesome! Unplug the pump.... the water's not stopping. Awe man, it created a full siphon. Had to close the ball valve to get it to stop.

20190725_201320.jpg


I'm thinking I have to add a vent stack, but the ceiling is lower than the max head height of the pump. Vacuum breakers are brass, so that wont work.... probably have to lower the pumps so I can add the vent stack.
 
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Ross B Reef'n

Ross B Reef'n

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Wow ;Meh. What’s the quote? ‘The best laid plans of mice and men sometimes go amiss’?
Ain't that the truth and a bit wisdom. Can't always think of everything. On the bright side, a few Tee fittings and we'll be back in business! Going to try adding the vent stack without moving the pumps first. Didn't doing any calculations, but hoping the flow from the existing piping possibly reduces the max head height? If that doesn't work, I'll lower the pumps.
 

Blutspitze

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It's not all good in the neighborhood tonight. Connected the water changes pumps for the freshwater. No leaks, okay, great! Plugged a pump in for a test run. Works great! Awesome! Unplug the pump.... the water's not stopping. Awe man, it created a full siphon. Had to close the ball valve to get it to stop.

20190725_201320.jpg


I'm thinking I have to add a vent stack, but the ceiling is lower than the max head height of the pump. Vacuum breakers are brass, so that wont work.... probably have to lower the pumps so I can add the vent stack.
I'm probably unclear about how the flow is going, but would it help to change the 90/90 fittings to goose necks? Or would it be possible with how the system is set? Switching direction'll generally break a siphon.
 
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Ross B Reef'n

Ross B Reef'n

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I'm probably unclear about how the flow is going, but would it help to change the 90/90 fittings to goose necks? Or would it be possible with how the system is set? Switching direction'll generally break a siphon.
Even though I've plumbed the piping at the pump to go above the max water level of the water reservoir, the outlet is lower than the minimum water level. Without a air break, it creates a full siphon. I believe this will only be an issue for the reservoir stacked on top. The compounded issue is that the ceiling is lower than the max head height + max water level (which is a worse case scenario than initially though).

As of right now, I've thought a vacuum break mechanism to solve this issue. I'll post a sketch as time allows.
 
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