pics DIY PVC OVERFLOW!

new-guy

new-guy

Member
i built one of these for my 45 tall and i really like it. but how do you keep the noise down from the stand pipe. i put a cap on it and drilled a hole in the middle and siliconed a hose in it. that really toned down the noise but i need to find out how to finish it off (noise). im still getting a pretty good gurggling sound. would it matter if i put a check valve on the end of the hose, would that work for the noise?
 
scopus tang

scopus tang

Active Member
Originally Posted by new-guy
http:///forum/post/2562016
i built one of these for my 45 tall and i really like it. but how do you keep the noise down from the stand pipe. i put a cap on it and drilled a hole in the middle and siliconed a hose in it. that really toned down the noise but i need to find out how to finish it off (noise). im still getting a pretty good gurggling sound. would it matter if i put a check valve on the end of the hose, would that work for the noise?
We're going to try topping off the hose with the plastic piece w/ sponge insert that comes with maxijet powerheads to see if that helps anymore.
 
john,jr

john,jr

Member
Originally Posted by hal000
http:///forum/post/2378255
oh heres the pics
( 1ST pic is not mine, I just got it of net.
hope owner does not mind. and i thank him)
I built one last night and man was it quite no noise at all. But It did lose siphon when I turned the power off.
 
veni vidi vici

veni vidi vici

Active Member
Originally Posted by john,jr
http:///forum/post/2574542
I built one last night and man was it quite no noise at all. But It did lose siphon when I turned the power off.
I had the same problem with mine.I scrapped it though .Im getting a new tank and going a different route.I think the problem was either the pipe was to big or no check valve.I believe it was the pipe diameter though.
 
saltymac

saltymac

Member
From what I know, a 1 inch pipe requires 600 gph. Im not sure but it sounds to me that you guys are forgetting the fact that your sump is below the display tank, which causes a pump to loose its rating at a considerable rate with every foot of distance. If the pump is rated at 1000 gph, that is at level, if its 5 ft below the tank, its only 500 gph....only an example not exact numbers. I hope this helps, there is a certain rating, bulkhead or something, I cant remember what it is called, but it refers to the distance for the pump under level. Good luck.
 
veni vidi vici

veni vidi vici

Active Member
Originally Posted by saltymac
http:///forum/post/2574597
From what I know, a 1 inch pipe requires 600 gph. Im not sure but it sounds to me that you guys are forgetting the fact that your sump is below the display tank, which causes a pump to loose its rating at a considerable rate with every foot of distance. If the pump is rated at 1000 gph, that is at level, if its 5 ft below the tank, its only 500 gph....only an example not exact numbers. I hope this helps, there is a certain rating, bulkhead or something, I cant remember what it is called, but it refers to the distance for the pump under level. Good luck.
No we are talking about overflow loosing siphon during simulated power outage
 
saltymac

saltymac

Member
Well maybe I confused, but I want the siphon to break or my refugium will overflow. Thats on the sump return, my overflow box keeps flowing for a few gallons then starts up again on power up....are you talking about the feed to the sump breakin siphon?
 
veni vidi vici

veni vidi vici

Active Member
Originally Posted by saltymac
http:///forum/post/2574637
Well maybe I confused, but I want the siphon to break or my refugium will overflow. Thats on the sump return, my overflow box keeps flowing for a few gallons then starts up again on power up....are you talking about the feed to the sump breakin siphon?
Yes ...but when power returns,the siphon to the sump from DT fails to restart.The double 90s going over the back fill with air.
 
john,jr

john,jr

Member
Originally Posted by Veni Vidi Vici
http:///forum/post/2556712
More than 750 gph as i just found out. 1" pipe is to much.
I must have done something wrong. It looked just like the one you have except for the U tube. I have an over flow with a 1'' u tube and my return pump just can stay up wiyh it but the 1'' PVC over flow couldnt keep up with my pump. The only thing I realy liked about it was I han no noise at all.
3/4" 330 gph
1" 600 gph
1 1/4" 910 gph
1 1/2" 1300 gph
1 3/4" 1800 gph
2" 2350 gph
2 1/4" 2960 gph
2 1/2" 3650 gph
2 3/4" 4450 gph
3" 5280 gph
 
john,jr

john,jr

Member
Originally Posted by coralreefer
http:///forum/post/2553846
how much GPH flow would 1.5 in. pvc make on my 75 gallon? would that be overkill?
3/4" 330 gph
1" 600 gph
1 1/4" 910 gph
1 1/2" 1300 gph
1 3/4" 1800 gph
2" 2350 gph
2 1/4" 2960 gph
2 1/2" 3650 gph
2 3/4" 4450 gph
3" 5280 gph
 
trouble93

trouble93

Member
I went out got all the stuff needed for the overflow...Spent all day putting it together and couldn't get it to work for me. I used 3/4in. pvc al cut where to the letter and it just would not flow. I'll go and give it one more try.
 
trouble93

trouble93

Member
I went out got all the stuff needed for the overflow...Spent all day putting it together and couldn't get it to work for me. I used 3/4in. pvc al cut where to the letter and it just would not flow. I'll go and give it one more try.
 
keebler

keebler

Member
Sucking on the end of it to fill it with water and then turning on your pump should make it work, maybe post a pic if you are still having problems.
 
sjlchgo

sjlchgo

New Member
First off I want to thank all of you that have contributed to this post. It has been very informative. I made one of these and can't understand how to get it started. As I understand the venturi valve blows water out? How is connecting this to the pipe going to help with the siphon? How can I get this going. I tried plugging the stand pipe and using a shop vac to suck the water thru at the discharge end. Water came thru but stopped when I removed the vac. I don't have any holes drilled yet. Are these a must? Helllllllllppppppppppp.
 
bmkj02

bmkj02

Member
Yes it is a must. Need to drill a small hole on top and insert a check valve and seal it in. While you are sucking the air out it will begin to fill. I have one on my 24g aquapod
 
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