Flexible PVC Tubing vs. Standard PVC Pipe

[ChristianJock07]

I'm trying to decide on which to use for my 75g and with the flexible it would be so easy to plumb my sump. I would use the flexible for both the drain and return.

Can I get some advice and pro's and con's of each please? I'm trying to keep my plumbing as simple as possible.

I should add this is an AGA RR tank drilled on bottom.....

Thank you!

[PelagicMagic]

only con with flex pvc is the cost. They will both do the same thing but as you said it may be easier to work with the flex pvc

[Bio-Reef]

Flex tubing will allow for better flow with large radius turns. PVC requires elbows at each change of direction and that means pressure drop. PVC also transfers vibration noise....Good Luck...Jack

[nikonosis]

I say flex pvc if you can afford it. Because of cost we used spa flex and a regular pvc combination.

[grochmal]

One issue I found with the flex pvc is the "memory" of the pipe.
It comes in a coil at the store and when you cut off a length for your use it retains the coil shape.
Sometimes it can be a challenge to get it to bend in the shape you want instead of the coil shape.

[raycityboy1]

Originally Posted by grochmal

One issue I found with the flex pvc is the "memory" of the pipe.
It comes in a coil at the store and when you cut off a length for your use it retains the coil shape.
Sometimes it can be a challenge to get it to bend in the shape you want instead of the coil shape.

With flex you have to subject it to a lot of heat to make it relax. I tried setting it in the sun with a weight on it, but I wound up using a steam iron b/c of time.

I replumbed my entire tank with PVC after I had done it with flex. I went with flexible first b/c I thought it would be easier. I think the pvc was a lot easier and I got a better product. I still have flex on my fuge b/c of my seahorses and I have read that the noise transfer and vibration can have an affect on their mating habits. I just think the PVC is cleaner and easier to work with. If you are only going short distances with the flex its alright, but using any considerable amount is a PITA IMO.

[MikeAtJax]

Flex does have a memory but it is worth it. Try not to get the last of the roll where there will be more memory because it is tighter.