DIY plans for Coil Denitrator

[andresont]

Originally Posted by howdy20012002

the material needed:
1 - 3 foot piece of 3 inch black pvc
1 - 3 inch cap
1 - 3 inch to 4 inch toilet flange
3 - 25 foot 1/4 inch airline ( i used a the more rigid type)
4 - 1/4 inch quick connect union
1 - 1/4 inch shut off valve
1 - 1/4 inch quick connect valve
material for growing bacteria - (bio balls and ceramic rings)
1 - 4 foot piece of 1.5 inch pvc
duct tape
pvc glue
teflon tape.

How about using wider then 3” Black PVC ? say 5” pipe?
Then we can roll more tubing say 30% more, and leave it on the smaller diameter 1.5" PVC pipe. Now you don’t have to remove the inner 1.5"PVC pipe, just insert it together with air tubing inside the wider then 3” PVC and drop the bio balls or coral rubble inside.
So this is pretty much the same thing except now we have more uniform air tubing distribution with possibility of longer water travel within same hight unit just wider and one does not need a second person to unload the air tubing.
Maybe if cost is still low this can be done in even shorter but wider unit that will fit under the aquarium stand.
What do you think guys?