Plumbing advice - internal horizontal overflow

[phoenix001]

Need some advice on plumbing. I didn't want the massive vertical overflow on my new tank, so I went with a horizontal. Glasscages did this for me but need some advice on the plumbing. As you can see in the pic, I have 2 holes that I will put 1.5" bulkheads on. Would I have 2 separate runs down into the sump or should I tie the 2 together with a T so there is only 1 run to the sump?

Thanks
Tom

 

[d2mini]

I wouldn't tie the two together. Set up a Herbie so one is your main drain, and the second is your emergency drain.

 

[phoenix001]

Did some reading on the Herbie setup but concerned that that would not be easy to achieve with this setup. I would have to add elbows in the plumbing to create the standpipe, right?

 

[chriscobb]

Did some reading on the Herbie setup but concerned that that would not be easy to achieve with this setup. I would have to add elbows in the plumbing to create the standpipe, right?

Your issues using elbows??

 

[phoenix001]

I assume by your response that I should not have an issue using elbows??? ��

My response is based on seeing pics of the herbie and there are no elbows but admittedly I have no experience with this setup, so....

 

[Lsufan]

I would definitely do a syphon drain with a emergency drain. It will be able to handle more flow & be way quieter then a durso. So no, I definitely wouldn't tie the two together. If u tie them together & something clogs the pipe after the tee then u will have a flood because u don't have a emergency drain.

I would install the bulkhead & in one of them install a 90 facing up for a emergency. In the other bulkhead install a 90 facing down on the syphon drain, as long as it will fit inside the overflow box. If it won't fit then put a strainer straight on the bulkhead for the syphon but u will need the 90 facing up on the emergency

 

[phoenix001]

Is the emergency drain just the 90 or would I add a small length of PVC to just above the water line so the drain would always be dry unless there is an emergency?

 

[d2mini]

Is the emergency drain just the 90 or would I add a small length of PVC to just above the water line so the drain would always be dry unless there is an emergency?

However you do it, you want the e-drain to be just a little bit higher than the water line in your overflow during normal operation.
If you start to hear a trickle noise, then you know that for some reason the water has risen in your overflow so you can investigate and make any adjustment.
I like to have a gate valve on the siphon plumbing for easy fine tuning.
The e-drain should alway run wide open.

 

[Lsufan]

What he said, usually a 90 is all that's needed but judging by your picture u may have to add a short piece of pipe to it because it looks like your holes are drilled a little lower then usual. It could be the eurobrace & having to look at the pic sideways making it look like that though.

I wouldn't worry about it to much right now because that is something u can play with once u get it setup. U won't have to glue the 90 into the bulkhead or glue the short piece of pipe to the 90. I would start with just the 90 & once u get it dialed in u can add a piece to it if u need to raise the water level in the overflow to quiet it down or be more consistent.

 

[FullBoreReefer]

I wouldn't tie the two together. Set up a Herbie so one is your main drain, and the second is your emergency drain.

This.

Mine came with two holes also. I used the 1" for a siphon drain with a valve, the other is 1.25" open backup/emergency drain.