J tube question

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Scubarod

Gambusia
MFK Member
Feb 21, 2007
371
3
18
Stoon
will the flow rate into the sump change if i add 2 more one in j tubes to my set up?...i need more flow into the sump to open my ball valve wide open...any suggestions?
 
one has any suggestions??
 
[video]http://s31.photobucket.com/albums/c352/scubarod/?action=view&current=video-2012-02-20-20-17-48.mp4[/video]
 
From what I could see in the video you have a couple things to do. You can add two more J tubes to the overflow and it will help the flow increase, but the overflow's feed to the sump must be increased too. As long as you can balance it out you should be able to get what you want.
 
Thanks. Will increasing the diameter of the overflow drain increase sump volume?
 
It will as long as your inflow to the overflow box can keep up. That's where balancing it will come into effect more. If you put too big of a outflow pipe on you will see the water pull into the overflow box and then immediately drain down to the sump, the inflow to the overflow will need to be increased then or the outflow dialed back via valve, which is how it is now to my understanding. Increase the flow into the overflow and see how is does with the ball valve wide open.
 
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