I am thinking about drilling the tank. Where do I have it drilled at? Also, how do you do the overflow??? It's a Petco tank.
Where do I drill the 40B
- Thread starter Benson
- Start date
As far as I know (assuming that specific 40B isn't tempered) you can drill anywhere except the bottom. At that point it is more about where you want it visually and where you want the water level controlled at.
Find out if the bottom is tempered, if not drill on the bottom, or centered along the back. A corner would make it easier to construct an over flow out of black Acrylic.
If the glass isn't tempered you can drill it wherever you want.
You can make a box or buy something like a glass holes overflow....
http://www.glass-holes.com/
Highly recommend this design though if you can swing it...
http://reefcentral.com/forums/showthread.php?t=1310585
You can make a box or buy something like a glass holes overflow....
http://www.glass-holes.com/
Highly recommend this design though if you can swing it...
http://reefcentral.com/forums/showthread.php?t=1310585
Please don't be bean animal.. crap.. just looked at the link.. it is. I hate those things personally. Every person who I have seen do it, it looks like crap, takes up way to much room, and is unneeded IMO. It does work, but is way to big and ugly for me and other easier/smaller methods work just as well, ie. I have never had an overflow with my external durso, simple 1-1/2" bulkhead, T on the back of the tank, cap on the top with a hole drilled, works flawless and the overflow box is tiny in the tank.
Crap? Surely you jest sir 
There are 4 tanks in my area that run the BA and I have never seen an overflow move as much water so quietly. Not a single bubble either and a couple of the sumps have no baffles in them. You don't have to do a coast to coast overflow to make this work when drilling the back glass and you can also do it by drilling the bottom...
http://www.bulkreefsupply.com/store/brs-tv/plumbing-videos
There are 4 tanks in my area that run the BA and I have never seen an overflow move as much water so quietly. Not a single bubble either and a couple of the sumps have no baffles in them. You don't have to do a coast to coast overflow to make this work when drilling the back glass and you can also do it by drilling the bottom...
http://www.bulkreefsupply.com/store/brs-tv/plumbing-videos
Didn't mean to say the idea is crap.. just the builds I have seen. All glass overflow boxes, no lids, always getting snails in them clogging up the pipes.. If people would use a small overflow box with teeth and lids I wouldn't be so against them, but the way I have seen ever one made, with glass overflow boxes that take up almost the entire top/back wall, just always looked terrible to me. Simply black ABS with teeth cut in it and a lid on top would make me like them much more but I have not seen one person locally do that.
This is one of several locally for me. It is a 90G wave front tank.. tell me that overflow doesn't look hidious as well as a disaster waiting to happen. I would rather have 1 big overflow pipe that is protected by teeth and a lid to prevent snails from getting into the overflow box/pipe vs using glass, no teeth, meaning you can't put a lid on it and having a high possibility of snails actually clogging all 3 pipes. Redundancy is usually always good, but in this case, in the all the builds I have seen locally, it seems like more of a risk than less. Actually upon closer inspection, it seems that is exactly what is happening in the video below because in previous pictures by this person the water level in the overflow was only at the intake on the 2 elbos facing downwards, the one up was out of the water, but in the video it seems the one facing up is actually in use, telling me either too much return pump flow or something is clogging the 2 downward facing elbos.
[YT]rAxIjiDzg50[/YT]
When it was first setup, notice the water level in the overflow.
[YT]rAxIjiDzg50[/YT]
When it was first setup, notice the water level in the overflow.
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