AGA 120g MegaFlow Owners; Question

[Tylt33]

Our bulkheads are 1.5" Return and 1.75" Drain, correct? I measured and double measured, and that's what I came up with. I'm a bit baffled, because I was planning on buying a Durso Standpipe, but it doesn't look like he makes them for a 1.75" Drain. Thoughts?

[Tylt33]

Ugh, now I'm thinking; do 1" bulkheads fit a 1.75" hole, and .75" bulkheads fit a 1.5" hole? I'm confused.

[KRASHPD]

You are correct. One inch bulkheads fit into a 1 3/4" hole and a 1" or 3/4" bulkhead can fit into a 1.5" hole. Good websites like premium aquatics will state what size hole the bulkhead will fit into. Here is a link to the Megaflow standpipe on Drs Fosters and Smith:

http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=12078

[Tylt33]

Thank you very much!