Originally Posted by mono
Alright, I've been f%#*ing around trying to find some bulkheads from hardware shops and plumbing supply stores for 2 weeks. I've had it, and I'm not paying $20 for the ones at the aquarium, they aren't even the ones I want.
sorry to hear about your trouble finding parts! I know how that goes, the town I'm in is very small and it is frequently difficult to find anything "exotic" like tank plumbing pieces!
you talk about getting water out of the tank? for this you need an external overflow - the bulkheads are but a single part of the system, which allow the overflow to drain into the sump.
for bulkheads, here is my parts list:
3/4 inch socket (or slip or weld) to 3/4 inch male pipe thread
3/4 inch female pipe thread to 3/4 inch hose barb
1 inch rubber o-ring
I don't know if they use inches for plumbing in AU but these are all very standard parts, any store that sells plumbing pieces should sell them or something similar.
for the siphon U-Tube
1.25 inch 90 degree elbows two
2 feet of 1.25 inch pipe
I cut a small piece of pipe just long enough to join the two elbows together, and then two more pieces a bit longer to extend down into the skimmer box and drain box, to about 1.5" from the bottom.
for the overflow box itself, here is my cut list, all cut from 1/8th inch plexiglas
drain box: (goes outside the tank)
bottom----12 inch by 3.25 inch
front----12 inch by 6 inch
back----12 inch by 6 inch
2 sides----3 inch by 6 inch
skimmer box: (goes inside the tank)
bottom----12inch by 3.25 inch
front----4inch by 12 inch
back----6inch by 12 inch
2 sides----3inch by 4 inch
working with the plexi was something I put off for a LONG time. my first overflow built was plastic juice/food boxes connected together with a piece of plastic scrap. it worked for almost a year, and would still be working if I didn't break it screwing around.
people have built overflows using the small plastic "tanks" you get from the pet store to keep sick fish or betta in.
sorry but I can't build you one right now, I don't have the time. I'm happy to help with whatever information I can provide!