Silicone tubing for return line?

[widmer]

I was thinking about attaching a section of silicone tubing to my return line, like the first foot that's connected to the pump. I figure this could really help to decrease vibration. Has anyone tried this before?

This is an example of what I would buy: http://www.amazon.com/1-00-Food-Gra...427590643&sr=8-1&keywords=silicone+3+4+tubing

 

[Fishmommy]

I have that. Works sweet.

 

[thejuggernaut]

It's actually a pretty common practice. BRS even sells it for that purpose, admittedly at a premium. I think a decent leader section to your mounted rigid plumbing is the best way to go.

http://www.bulkreefsupply.com/white-soft-silicone-tubing-sold-by-the-foot.html

 

[widmer]

Gosh, I didn't realize it was common; I just assumed everyone does either vinyl or PVC. Haven't seen it mentioned on any builds I've seen recently. Well, in lieu of any reason not to, I'll definitely go with it.

 

[thejuggernaut]

Yea, I am going to use it on my build soon also. It just helps isolate noises. I always hated spa-flex. It was almost as rigid at regular PVC, but was always bent. An vinyl never stays round and tries to kink. A real pain!

 

[dkeller_nc]

Some of us run silicone tubing for the entire length of line between the return pump and return fittings in the tank. Because the silicone forms smooth curves when changing direction (as opposed to a 90 degree elbow in rigid PVC), it cuts down on friction head losses, giving you slightly higher flow from the same pump.

The other nice thing about silicone is that while the initial cost is high, you will never have to replace it. I've been using the same piece of silicone hose as a siphon for the last 20 years.