How does my PVC overflow/Sump set up sound?

LadfromLondon

I'm planning to do the exact same build for both of my tanks. They are both the same size (82G) and are on identical diy stands. The only difference is one will be a 40G sump and one will be a 70G sump. The height of the tank is just over 19" and the distance from the sump to the tank is a little under 4ft.

After watching KingofDiy's videos on his PVC Overflow, I think I've planned mine out correctly, I'd just like a little insight from someone more knowledgable than myself!

Equipment:
1x PVC T 1"
PVC Pipe 1" - Overflow
PVC Pipe 2' - Weir (Double the overflow)
PVC End cap 2" - For the weir
PVC 90 Degree Swept bend/elbow 1" - For the overflow
Drill- For drilling holes in the overflow
PVC Cement - Fixing everything together
Tom's Aqualifter Pump - For priming 24/7
Suction cup - For the weir
Plastidip- Spray painting black
6mm Airline - For the Aqualifter pump
Aquarium safe silicone - For the airline
Ball valve - For the return pump (Maybe)

With Joey's calculations, a 1" PVC overflow with the weir should give me 600GPH. 60% increase due to the weir.

I used Marine Depot's video to help size a return pump. Their video suggests -

1ft of vertical plumbing = 1ft of head pressure
1x 90 degree PVC Elbow = 1ft of head pressure
10ft of horizontal plumbing = 1ft of head pressure

Based on this, I am considering using the Sicce Syncra 3.5 as a return pump for my sumps. The PVC diameter will be the same as the return pump's diameter. I still need to calculate total head pressure but I do think the 3.5 will be the closest match for me.

Does anyone have any thoughts/concerns with this setup I'm planning to do?

Thank you very much :)
 

Patman0519

I'm planning to do the exact same build for both of my tanks. They are both the same size (82G) and are on identical diy stands. The only difference is one will be a 40G sump and one will be a 70G sump. The height of the tank is just over 19" and the distance from the sump to the tank is a little under 4ft.

After watching KingofDiy's videos on his PVC Overflow, I think I've planned mine out correctly, I'd just like a little insight from someone more knowledgable than myself!

Equipment:
1x PVC T 1"
PVC Pipe 1" - Overflow
PVC Pipe 2' - Weir (Double the overflow)
PVC End cap 2" - For the weir
PVC 90 Degree Swept bend/elbow 1" - For the overflow
Drill- For drilling holes in the overflow
PVC Cement - Fixing everything together
Tom's Aqualifter Pump - For priming 24/7
Suction cup - For the weir
Plastidip- Spray painting black
6mm Airline - For the Aqualifter pump
Aquarium safe silicone - For the airline
Ball valve - For the return pump (Maybe)

With Joey's calculations, a 1" PVC overflow with the weir should give me 600GPH. 60% increase due to the weir.

I used Marine Depot's video to help size a return pump. Their video suggests -

1ft of vertical plumbing = 1ft of head pressure
1x 90 degree PVC Elbow = 1ft of head pressure
10ft of horizontal plumbing = 1ft of head pressure

Based on this, I am considering using the Sicce Syncra 3.5 as a return pump for my sumps. The PVC diameter will be the same as the return pump's diameter. I still need to calculate total head pressure but I do think the 3.5 will be the closest match for me.

Does anyone have any thoughts/concerns with this setup I'm planning to do?

Thank you very much :)
I would remove the p.v.c cement from your list and just stick with the aquarium silicone.
As far as the rest I think you are on it.
I built my media box myself also.
Best thing I've done as a fish keeper so far lol.
 
Upvote 0

LadfromLondon

I would remove the p.v.c cement from your list and just stick with the aquarium silicone.
As far as the rest I think you are on it.
I built my media box myself also.
Best thing I've done as a fish keeper so far lol.
Thank you. I'm not 100% on the PVC cement but if aquarium-safe silicone will keep things held together I may use that instead.

Cheers :)
this is my diy sump setup. DIY bottom suction pvc overflow for barebottom - sump | Aquarium Filter Forum | 494450

you just need to make sure the pvc overflow has higher flow rate than your pump. the pump is rated 660gph, but with 4' of lift, you should be ok. but if the pump is returning more water than the overflow can drain out, you can just build another overflow with 3/4" pvc.

i used cement, no primer, no problems.
Does the PVC overflow lose flow when you add elbows or when the pipework isn't going vertically straight into the sump? I'll likely need to account for a few twists and turns.

However, this scenario^ will be the same for my return pump, so I'm anticipating greater head pressure than 4ft. After reading your thoughts, that seems like it can only be a good thing.

I'll have a read of your thread and let you know if I have any other questions. Thank you :)
 
Upvote 0

jtjgg

Does the PVC overflow lose flow when you add elbows or when the pipework isn't going vertically straight into the sump? I'll likely need to account for a few twists and turns.

i don't know the numbers but i would say very slightly.
 
Upvote 0

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