Overflow drain size

[jeff@zina.com]

I'm looking to pipe some tanks to a central filtration system and I'm planning on a standpipe overflow for the drain from the tank. Is there any reason not to oversize this, say 1.5" piping (2" hole in tank)?

Thanks,

Jeff

[Jhhnn]

Can't really see any reason why not. Somebody here has posted pics of a similar system using tanks drilled in the back, with elbows, standpipes and strainers. I liked the idea of that, because the elbow can be rotated to drain the tanks to a preset level, or adjusted to maintain whatever water level you want...

I'd want strainers, just so the overflow would be less likely to clog. Maybe like this-

http://www.aquaticeco.com/subcategories/822/Plastic-Strainers/strainers/0

I've had excellent results using their uniseals on storage barrel plumbing, and they'd probably do well instead of bulkhead fittings... I use Pam cooking spray as an assembly lubricant- works great.