Return with locline question

[Guest]

I have attached a image that shows my current return and 2 possible ways I can think to do my return with locline. Anyone have any suggestions? The return will actually use a locline with a y that splits it in half, that way I have half of it going left and half of it going right. My current setup is directly in the center going straight ahead.

My main question is do I use 2 90's (elbows) and connect the locline upwards into the return or use 3 90's and connect the locline straight into the 3rd 90?

Also, where should I drill a hole to stop back siphoning?

 

[Guest]

if you can use only one 90 if you have to then 2...the more 90's reduces the flow

 

[bdare]

I used 2 90's to get the returns over the side of the tank. Then, Locline sells a male threaded piece that goes into the PVC. After that I added a locline 90.

 

[Jeff]

Drill the hole(s) in the vertical piece of pvc 1/2" below the optimal water line.

Drill at least two holes because when you need it to work, there will always be some fat snail parked right over the hole.

 

[coralreefer]

@DheereCrossing wrote:

How big of a hole should it be?

 

[bdare]

@coralreefer wrote:

How big of a hole should it be?"]

Start small. Test... If it don't work... go bigger.

 

[Jeff]

+1 on that. I'd start with 3/16 -1/8". It needs to be enough to allow air in when the water drops to that level. Keep the holes cleaned out with a toothpick or something. Again, they will clog at the worst moment.