Trying to access overflow box to fill gaps

Johnbarmy · 09/06/2015, 12:57 PM

Ok long story, I have to 2 overflow boxes im trying seal and secure i got weldon 4 and attached them but they have gaps in them so i tried filling in gaps with silicone yesterday I hooked everything up and the tank filled about 3/4 and the silicone gave in causing water to flow through the gaps....im trying to figure out if i cut out the top of acrylic tank just over the overflow section to silicone the insides or is there another way to fill the gaps.....

Johnbarmy · 09/06/2015, 02:10 PM

I'm wanting to cut just the corner out to access the overflow box

OhMatic · 11/15/2015, 05:20 PM

Johnbarmy
If your working with acrylic do not use silicone. Silicone will not work.
Use weld on #4 or weld on #16.
#16 is more viscus than #4.
#16 has a consistency more like elmers white glue than #4

Bogue Chitto · 11/15/2015, 08:24 PM

You may check on supermend. I have used that to fill in a hole in the bottom of a glass tank and it worked great. It will bond to acrylic too.

09/06/2015, 12:57 PM	#1
Johnbarmy Registered Member Join Date: Jun 2015 Location: Fort Drum, NY Posts: 60	Trying to access overflow box to fill gaps Ok long story, I have to 2 overflow boxes im trying seal and secure i got weldon 4 and attached them but they have gaps in them so i tried filling in gaps with silicone yesterday I hooked everything up and the tank filled about 3/4 and the silicone gave in causing water to flow through the gaps....im trying to figure out if i cut out the top of acrylic tank just over the overflow section to silicone the insides or is there another way to fill the gaps.....

11/15/2015, 05:20 PM	#3
OhMatic Registered Member Join Date: Oct 1999 Location: USA Posts: 261	Johnbarmy If your working with acrylic do not use silicone. Silicone will not work. Use weld on #4 or weld on #16. #16 is more viscus than #4. #16 has a consistency more like elmers white glue than #4

11/15/2015, 08:24 PM	#4
Bogue Chitto Registered Member Join Date: Aug 2015 Posts: 960	You may check on supermend. I have used that to fill in a hole in the bottom of a glass tank and it worked great. It will bond to acrylic too.