need advise

[seanb1]

i guess this question goes to people who have drilled their tanks.

tell me why i should drill my tank, and get rid of hang on the back overflows.

i just drilled a couple 29 gal tanks that i had laying around to use as a sump and a backup sump in case my pump quit, it was easy as heck.
im pretty confident i could drill out my 125 and am thinking of getting rid of the overflows.

just tell me why i should get rid of them please.

oh and a link to a thread here about where to position drains and returns would help alot since search option doesnt work most of the time.
size of bulkheads and pipe would be helpful also.

my tanks bottom cannot be drilled so everything hasta go in the back.

its a allglass 125, 72x18x22or 23 cant remember.

 

[waverz]

The best part of having a drilled tank is knowing that your tank is never going to over flow. The hang on the back type overflows are notorious for failing and causing your return to flood the tank. My biggest regret about my current setup is not drilling the tank. All it would take is the siphon line to clog or come disconnected and my return pump would flood the tank and keep pumping until the sump is empty. Thats pretty much my worst nightmare.

If you have drilled a couple 29's you should be able to drill your 125. Just take your time and keep the hole as perfect to round as you can. As far as placement, personally i like to have the hole a few inches away from any edges of the glass. So like 3 inches in and 3 inches down from the top, or something like that. I think it would be best to either build or buy an internal overflow with teeth so you don't loose any fish.

As far as the size of bulkhead i would say bigger is better, water can only go out as fast as its coming in, but if you use a small bulkhead you are limited to the amount of GPH from your return pump.

For plumbing i would suggest some type of durso setup to make it not as loud.

HTH

 

[bgreenlee]

Ditto to waverz.

I would also consider an internal overflow box, otherwise your water level is going to be lower then it is now. You can silicone it in while you are doing the bulkhead. Make sure that you can get the bulkhead out after the glass is siliconed in.

 

[mcclandy]

i just picked up a 72 bowfront that is predrilled. i am going to try to set up the overflow by going this route:

http://reefcentral.com/forums/showthread.php?s=&threadid=344892

It is supposed to be much quieter. looks like a pretty positive
response.

ultra quiet plumbing

anyone done this around here?

 

[jbrunken]

Ditto,

When/if your overflow fails, you will have a new appreciation for reef ready tanks.

It happened to me twice and it was not a fun deal.

-JB