Securing PVC to tank

[alann]

I'm planning out my plumbing and have an eclipse overflow but no drilled return holes and would rather just put the return pipes over the back rather than drill holes again. Does anyone know a way of securing the return pipes? I have a 1-inch spa PVC flex tube hooked up to my return pump, going into a tee that goes to two different returns. I also took out a 90 degree elbow and put the return nozzles straight into the tank to reduce head pressure. Here's a picture in paint of what it looks like. How would I go about securing the PVC?

 

[TangerineSpeedo]

Yes!
Get some tubing clamps that are appropriately sized for the hose you are going to use, such as these;

Surface Mounting Clamp for PVC Pipe

Gray Surface Mounting Clamp for PVC Pipe Surface mounting clamps help reduce the strain on your plumbing fittings and bulkheads by properly and securely supporting your aquarium pluming. Designed for durability and ease of use, this clamp utilizes a simple clipping mechanism to hold your PVC...

www.bulkreefsupply.com

Then get some 3M heavy duty foam tape such as this;
Amazon product

 

[Indymann99]

Just use a PVC surface mount to attach to the back wall. See YELLOW circle below.