Grey PVC

[Mike Olson]

Originally Posted by mark

At Home Depot the grey is in the electrical section (called plastic conduit rather than pipe or tubing).

At my LHD for the white, they have 1" sch 200 (thinner walled than white). If I don't need the pressure ability of sch 40 should I use that for my 1" runs (output of pumps for both the closed loop and sump)? Can sch40 fittings be used on the 200 pipe?

It is sch. 20...no such thing as sch 200 when referring to wall diameters

[mark]

The white 1" stuff definitely had the number 200 though it wasn't preceded by the word "schedule". The plumber guy was going back and forth between calling schedule 200 and series 200.

Did a google search on "schedule 200 pvc", appears the pipe Home Depot has is probably "CLASS 200".

[Mike Olson]

Sreies 200 I have heard of before...it is typically thinner like sewer grade PVC. Most aquaria will never even reach 5-10 psi, so anything that is PVC will suffice...the key is the glue and primer, make sure that they are correct for whatever piping you choose...and always give your fittings a quarter turn after gluing in so it spreads in the fitting...guaranteed not to leak then!