Semi Coast to coast overflow HELP

Saltwaternooby · 02/11/2010, 01:06 PM

Ok so I built my Internal overflow out of acrylic 48" long 5 high 4 deep.

Tank is a glass 115 60" long but last night the seem lifted on the corner and put like a gallon on my floor. I know there are many people that say glass to glass and vica versa. My questions are:

Should I redoo the Overflow using glass?

Or resilicone with ge rtv108, when I siliconed it in I didn't put a bead between the glass and acrylic just on either side of the box. Held it in place with superglue, then siliconed the outside and inside.

Fortunately I was doing a fresh water test and checking for leaks.

Thanks
Anthony

uncleof6 · 02/11/2010, 01:38 PM

I would redo it in glass. Silicone sticks to glass far better than it will ever stick to acrylic. In a non structural seam, though not ideal, acrylic can be used, however an overflow is structural (if it is external) and you cannot rely on silicone to hold it in place.

Jim

Saltwaternooby · 02/11/2010, 03:21 PM

This overflow is internal, but I was thinking of just redoing it any way.

customcolor · 02/11/2010, 06:22 PM

redo it with glass. silicone will hold that overflow DOWN below the water line much better if it where glass...make shure the glass is nice an clean

Saltwaternooby · 02/11/2010, 06:58 PM

Ok I will redo it in glass. Thanks for the info.

02/11/2010, 01:06 PM	#1
Saltwaternooby SPS junkie Join Date: Feb 2009 Location: Orangevale ca Posts: 3,915	Semi Coast to coast overflow HELP Ok so I built my Internal overflow out of acrylic 48" long 5 high 4 deep. Tank is a glass 115 60" long but last night the seem lifted on the corner and put like a gallon on my floor. I know there are many people that say glass to glass and vica versa. My questions are: Should I redoo the Overflow using glass? Or resilicone with ge rtv108, when I siliconed it in I didn't put a bead between the glass and acrylic just on either side of the box. Held it in place with superglue, then siliconed the outside and inside. Fortunately I was doing a fresh water test and checking for leaks. Thanks Anthony

02/11/2010, 01:38 PM	#2
uncleof6 Registered Member Join Date: Jul 2004 Location: AWOL Posts: 12,013	I would redo it in glass. Silicone sticks to glass far better than it will ever stick to acrylic. In a non structural seam, though not ideal, acrylic can be used, however an overflow is structural (if it is external) and you cannot rely on silicone to hold it in place. Jim __________________ "Things should be made as simple as possible, but not simpler." (oft attributed to Einstein; most likely paraphrasing by Roger Sessions; compactly articulates the principle of Occam's Razor) Current Tank Info: 325 6' wide Reef

02/11/2010, 06:22 PM	#4
customcolor Registered Member Join Date: Dec 2006 Location: kaukauna, wi. Posts: 3,879	redo it with glass. silicone will hold that overflow DOWN below the water line much better if it where glass...make shure the glass is nice an clean __________________ PLEASE DONT USE GREAT STUFF (THE YELLOW STUFF) IN YOUR TANK........USE POND FOAM (THE BLACK STUFF).. I BEG YOU! Great stuff====$5 a can 24-48 hour cure Epoxy to cover it====little as $5 for small projects or up to $100+ for larger projects and another 24-48 hour cure I hope you covered it well cuz if you didnt it will start to break down in a few months sand is another added cost to cover up the yellow. Pond foams====$9-$15 a can 24-48 hour cure DONE! You can cover it with sand if you want to (YOU DONT HAVE TO) though but thats added cost again Current Tank Info: 75 gal under way

02/11/2010, 03:21 PM	#3
Saltwaternooby SPS junkie Join Date: Feb 2009 Location: Orangevale ca Posts: 3,915	This overflow is internal, but I was thinking of just redoing it any way.

02/11/2010, 06:58 PM	#5
Saltwaternooby SPS junkie Join Date: Feb 2009 Location: Orangevale ca Posts: 3,915	Ok I will redo it in glass. Thanks for the info.