In the process of convincing my wife to hook me up with a 55 gallon tank, i found a reef-ready one with a corner overflow. I noticed there are two holes drilled at the bottom of the overflow. Why two? I know they are supposed to drain in to a sump or fuge, but why would i need two holes?
Also, does anyone know any good resources for plumbing?
__________________ Samuel
"If they but knew it, almost all men in their degree, some time or other, cherish very nearly the same feelings towards the ocean with me.... There is magic in it. Let the most absent-minded men be plunged in his deepest reveries--stand that man on his legs, set his feet a-going, and he will infallibly lead you to water, if water there be in all that region."
Typically, your overflow will house a durso stand pipe of sorts..and the other is the return. You may notice that your overflow has a cutout for a return pipe/nozzle.
Plumbing for your reef? There are many good sites to choose from. Do a simple google search with "reef plumbing durso overflow etc." and you'll find lots. I believe our friend Dick H. has some stuff on his site too.
Oh okay that makes sense. I was thinking the return went up and over the back (like in Rob's tank). So in this case the return would arch over the overflow and go into something like a spraybar, say along the back, right?
Thanks for the info David P, i will read up on this stuff.
__________________ Samuel
"If they but knew it, almost all men in their degree, some time or other, cherish very nearly the same feelings towards the ocean with me.... There is magic in it. Let the most absent-minded men be plunged in his deepest reveries--stand that man on his legs, set his feet a-going, and he will infallibly lead you to water, if water there be in all that region."
There are many diferent reasons why holes are a good idea, one i like the most is you dont have to have a syphon to create the over flow. Thats one more point of failure you dont have to worry about.. If i could buy another tank and start from scratch it would shirley be a drilled tank..
So i found some info on the durso standpipes online. These make a lot of sense; i couldn't figure out why you would even want a standpipe at first. Now it seems to make sense. Thanks for your help all.
David P: you drill through glass with a dremel? What type of tip do you use on it? I tried this before (not on an aquarium) and ruined my dremel stone. Are there diamond ones for this type of stuff?
__________________ Samuel
"If they but knew it, almost all men in their degree, some time or other, cherish very nearly the same feelings towards the ocean with me.... There is magic in it. Let the most absent-minded men be plunged in his deepest reveries--stand that man on his legs, set his feet a-going, and he will infallibly lead you to water, if water there be in all that region."
I use a dremel... and make lots of noise and dangerous glass dust... goooood times....gooooood times 
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