plumbing question?

[linjam]

when i go to put together the pvc to set up my sump what size of hole should i drill in my tank and what kind of pvc adhesive do i use to connect my fittings.

[caferacermike]

Size of tank, size of sump, size of return pump, wants, needs....etc...

Generally 1" bulkhead and 3/4" return for most tanks up to 90g. You'll see either larger drains and returns or dual overflows for larger tanks. Keep in mind that the hole will be larger than the bulkhead used. This is generally set by what brand of bulkhead you choose. Most are a standard size for aquarium use, some like Hayward are larger holes for the same size bulkhead.

Check with Ace in SA as he does some tank drilling and might know what size hole for what size bulkhead.

Standard PVC glue is all you need for your project. You could get "hot" glue (AKA wet glue) but you don't need to waste the money on it.

[linjam]

standard purple pvc glue will not harm the fish?

[caferacermike]

Standard purple PVC "glue" is not pvc glue, but is in fact a primer. PVC glue is clear. There are colored glues, orange and grey are typically CPVC and not necessary, blue or red is "HOT" glue for working with live systems that still have water in them. Oatey is the common home supply brand, the glue comes in a gold can. And no it won't harm the fish. It's the same stuff that your drinking water comes through.

[jroescher]

Here's a start:
http://www.savko.com/partlist.asp?pgid=2&ptid=5