Originally Posted by J.Mcpeak
Routing overflow into main outlet gains you nothing. Simply, you have only one outlet.
If the blockage appears in the lowest elbow you have a problem.
Bulkhead/elbow/straight pipe. X2 (same as return)
Gives more flow as less bends=more flow.
Haven't gone through the maths. Depending on corrections those numbers may change!
Also don't own a running reef but I have built the stand, tank and fuge!
(I'm only just one step in front! That's how I know those numbers will change)
Might need a bubble baffle somewhere, just before return pump.
(Only joking but. . .)
You might need to connect the pump to the return pipe!
Okay so, bulkhead then elbow then straight pipe into the sump for both overflow holes. Got it. Should I bother with check valves?
To get it plumbed into the sump I'm going to use an elbow at the bottom of the straight PVC
. The elbow will connect to straight (horizontal) PVC
in order to reach the sump and then another elbow to angle it down into the sump.
My math is as such:
- If I use 1" PVC
then my gravitational flow will be 600 GPH
- For every elbow I estimate I will lose 50-75 GPH
. (3 x 50-75 = 150-225 GPH
So my GPH
going into the sump will be 375-450. (Not sure which is more accurate)
And going up from the sump to the DT will be about 3 feet.
- So for every foot I estimate I will lose 75-125 GPH
. So that's (3 x 75-125 = 225-375 GPH
- And for each elbow I estimate I will lose 50-75 GPH
. (1 x 50-75 = 50-75) Will I need another elbow to connect the pump to the return?
- I'll put a check valve which I estimate will loose 50-75 GPH
(1 x 50-75 = 50-75 GPH
So going up I have restrictions of 325-525 GPH
. If I have 375-450 gallons going through the sump every hour I will have to account for this and the pump I will need. So if I had an 800 GPH
return pump (minus 325-525) the return flow would be 275-475 GPH
Down my overflow would be 375-450 GPH
and up my return would be 275-475 GPH
So I would need a return pump able to handle more? Or can you adjust it?
Is this correct? I'm super confused lol. Is there an easier way to figure this out? Haha