Calfo Style Overflow boxes - Page 24

SOLANA34 · 12/31/2008, 07:08 PM

I have had problems with snails and fish going overboard due to the flow i have. This is a great DIY idea that I thought i would share. I made the top clear so i could see whats going on inside and vented as a backup just in case the side slots get clogged for some crazy reason and to keep fish from jumping in. Slots are 3/16 wide machined by Me

CALFLO aka Coast to coast overflow

Before..

Calflo After..
Lexan top CLEAR for viewing inside of calflo black outer rim to match the calflo. This is removable at anytime with no modifications to original..Clean Simple just how i like it.

Plastic Methylene Chloride Glue

henrystyle · 10/31/2009, 05:00 AM

Quote:

Originally Posted by SOLANA34

I have had problems with snails and fish going overboard due to the flow i have. This is a great DIY idea that I thought i would share. I made the top clear so i could see whats going on inside and vented as a backup just in case the side slots get clogged for some crazy reason and to keep fish from jumping in. Slots are 3/16 wide machined by Me

CALFLO aka Coast to coast overflow

What tool did you use to machine the teeth or slots.. nice job
Did you make a template?

BeanAnimal · 10/31/2009, 09:29 AM

The slots significantly reduce the surface skimming of the overflow and increase the noise.

Long lengthwise slots would be MUCH more effective if you are concered about keeping fish and snails out.

flyyyguy · 10/31/2009, 05:19 PM

I do have to say it has always struck me kind of funny when people go to all this effort to build a coast to coast overflow box whether internal or external, the point of which being to maximize your surface skimming ability............and then they put teeth in it, reducing its surface skimming effectiveness by 50%(give or take depending on your teeth dimensions).

a c 2 c operating properly is taking such a paper thin sheet of water out of the tank you only need that horizontal gap to be less than that of what most people can fit through their teeth in the first place.

henrystyle · 11/13/2009, 11:37 PM

So no teeth....Got you...Slot across the back.

I'm building a 190g out of acrylic. I'm trying to have an external c 2 c with the back tank wall having this slot overflowing into the overflow box. You said there should be a thin sheet of water overflowing. So about a 1/4" long slot or groove (indent) across the top of the back wall?

I want the running water level in the tank to be about a 1/2" from the height of the tank.

10/31/2009, 05:19 PM	#579
flyyyguy King of the white corals Join Date: Jun 2006 Location: nw Posts: 4,516	I do have to say it has always struck me kind of funny when people go to all this effort to build a coast to coast overflow box whether internal or external, the point of which being to maximize your surface skimming ability............and then they put teeth in it, reducing its surface skimming effectiveness by 50%(give or take depending on your teeth dimensions). a c 2 c operating properly is taking such a paper thin sheet of water out of the tank you only need that horizontal gap to be less than that of what most people can fit through their teeth in the first place. __________________ I like holding hands, snuggling, and long walks on the beach

11/13/2009, 11:37 PM	#580
henrystyle Registered Member Join Date: Feb 2008 Location: East Stroudsburg, Pa Posts: 202	So no teeth....Got you...Slot across the back. I'm building a 190g out of acrylic. I'm trying to have an external c 2 c with the back tank wall having this slot overflowing into the overflow box. You said there should be a thin sheet of water overflowing. So about a 1/4" long slot or groove (indent) across the top of the back wall? I want the running water level in the tank to be about a 1/2" from the height of the tank. __________________ In god I trust, all others I search! Current Tank Info: 30 custom mixed reef/120 SPS REEF COMING SOON Last edited by henrystyle; 11/13/2009 at 11:44 PM.

12/31/2008, 07:08 PM	#576
SOLANA34 Registered Member Join Date: May 2008 Posts: 152	I have had problems with snails and fish going overboard due to the flow i have. This is a great DIY idea that I thought i would share. I made the top clear so i could see whats going on inside and vented as a backup just in case the side slots get clogged for some crazy reason and to keep fish from jumping in. Slots are 3/16 wide machined by Me CALFLO aka Coast to coast overflow Before.. Calflo After.. Lexan top CLEAR for viewing inside of calflo black outer rim to match the calflo. This is removable at anytime with no modifications to original..Clean Simple just how i like it. Plastic Methylene Chloride Glue

10/31/2009, 09:29 AM	#578
BeanAnimal Registered Member Join Date: Feb 2003 Location: Pittsburgh Posts: 17,132	The slots significantly reduce the surface skimming of the overflow and increase the noise. Long lengthwise slots would be MUCH more effective if you are concered about keeping fish and snails out.