Read through everything...

So am I to understand - there's no max volume rule? Was playing with an idear last night; realized if I run it in a 5.5, it could be calculated out with a whole system volume of closer to 20g (it's not, but if one added all the capacities together...).

I don't think there's a max volume limit. I contemplated having a 10G with a 33G sump....

Just going to throw it out there and cover bases; don't want to end up with some nitpicks at the end. As I've seen some of the N-R contests deteriorate into at the end...

no total volume imit but sumps must be deducted. display volume 10ish.

Deducted? Or dedicated? Or both? :)

All of the above..:mrgreen:

Corrected.

Deducted from cost... Dedicated to the contest Tank (aka Contest Tank can not be plumbed into an existing sump.)

Now it's time to get technical :mrgreen: Yeah I'm gonna drive ya nuts...

So does this mean all plumbing odds & ends are free and not to come from budget?

Case in point - Bulkheads; do I order my uniseals now; or can I assume my 7.99 bulkheads aren't going to count against budget?

Is anything found in the plumbing aisles at home depot / rona fair game for non-budget? :lol:

Plumbing is plumbing.. :) I used a regular bulkhead, and gate valve, and loclines..

Plumbing is free.