Overflow Plumbing is Leaking!

I just added enough water for my overflow to start taking water down to the sump, but instead of just flowing like it should, there is a leak at the T-connector (where the lines split to go to the skimmer chamber/ refugium).

I am not very adept at plumbing and would appreciate any help that you can supply. I tried to tighten the screw clamp and it didn't really help much.

Should I silicone around the barbs and then tighten down the clamp?

I have highlighted the portion where it is leaking in the photo. I can't replace the green tube because the previous owner epoxied it to the bulkhead. I have confirmed that the bulkhead is not leaking at all- it is right at the union with the T.

 

Sorry forgot to actually circle the problem spot.

 

I would just hard plumb it, also, you are using metric tubing on the top of the T, so that is likely why it is leaking.

 

The problem is that I bought the tank used and the bulkhead/ green "metric" tubing are epoxied together and I can't put a new bulkhead in because I already have the tank full with rock and some fish.

 

Maybe wrap some teflon tape around the male part then re-attach the tubing and pipe clamp

 

If you have an overflow box, fish and rocks will not make a difference. Drain the overflow and get a new bulkhead, epoxy is not the way to do it.

 

anemone beat me to it...but if you have an overflow box, you should be able to take all the plumbing out and it not affect the tank one bit. aside from the levels going up in the sump, which you may not have accounted for, because it is more volume than when the system is moving≥

 

Well, from the pic, you dont have any clamps over the t-split lines and what looks like tape over the main drain valve that leads to the t-split. those should all be clamped by metal or plastic clamps. Unable to see under the tape, did u use pvc cement to attach the plastic piece which you plugged into the bulkhead? or if its a threaded connection, did you use plumbing/teflon tape?

 

bah, just looked at the second pic. the tubing your using is too big for the t-valve. you need to either switch over to a larger t-split or use a reducer to drop from what looks like a 1" drain to a 3/4".

 

those parts can usually be found at lowes or osh. home depot generally will not have vinyl tubing reducers/connections/etc.