I was having the same problem getting the larger OD flex pipe to bend properly. What I did was fill the bathtub with as hot of water as I could and let the pipe sit in it for 1/2 and hour. After that it was a great deal easier to bend.

The main tank is 90gal. 48x18x24. The stand is 48x18x30. The sump is a 33gal. I'm about 6' but I need to buy a step stool :biggrin:

Good idea. I'll give that a try too. I was thinking since I want to be able to take it apart in the future, I may just cut the flex into smaller lengths and connect them with unions like some suggested.

Can you snap a full shot of your sump?

I've been trying to dry fit all the plumbing parts together but there are some connections that require a bit of force. Like PVC into Bulkhead in the overflow. Any recommendations on how or what order I should plumb my setup? Or what order do people generally plumb their parts so that you can easily connect all the parts from overflow to sump? I'm worried about adding to much force to get the parts to fit together once the glue is on that the tank might chip or crack.
Thanks!!

PVC will go together easier once glue is applied. It kinda lubricates the joints. As long as you use primer, and evenly spread glue, the PVC will seal up nice even if there is only 1/2 of the pipe sticking in the connection depth. Wouldn't trust less than 1/2 though.

For dry fitting, a little petroleum jelly helps. Just wipe it off when you're ready to glue

I measure my PVC then cut to length, then dry fit more for marking for alignment. As said if you de-burr the pipe, it will bottom out with the glue, as the glue acts as a lube.

I'd be a little hesitant about trying any lubricant for fear of contaminating the joint.

Thanks for all the advice. I'm getting ready to glue now. Just wondering...Do I need to apply pvc cement to connecting parts that are going to be inside the fish tank?

Here is what I have so far by dry fitting. The pieces will fit more accurately once I apply the primer and glue. Am I on the right track before I start glueing?

I'm still missing a pvc on the far overflow. I'll cut that tomorrow.
http://www.canreef.com/vbulletin/att...1&d=1208493118

These parts will be connect with flex hose.
http://www.canreef.com/vbulletin/att...1&d=1208493118

http://www.canreef.com/vbulletin/att...1&d=1208493118