Noted. So need a few days curingI've used acrylic to make baffles in a glass sump successfully and unsuccessfully.
I had one fail when I used 1/8" acrylic and regular silicone.
I've done a couple sumps that I had for several years using atleast 1/4" acrylic and Momentive RTV 103.
You have to get both sides siliconed in and allow it to dry for 3-4 days.
Thank You for sharingI built my sump using a 75g tank and acrylic baffles. The acrylic has to have room to expand a little in between the glass. This is the silicone I used
Made of 100% silicone, the GE 2.8 oz. Silicone Sealant provides a watertight seal around doorways and windows and is ideal for marine applications above the water line. The sealant can adhere to plastic,www.homedepot.com
Ok. Thank You for the additional detail.I sound like a broken record, and @Zach B has already pointed it out. If you use the right silicone and let it cure it will stick like grim death. It's readily available at HD, but not in the paint department with the other caulks. You have to go where they sell acrylic sheet goods (I thing the window department). The other issue is let it cure for as long as you can....three day minimum, but prefer five or more. I've used this silicone on all my glass/acrylic sumps and it works and is reef safe.
The silicone will bond to the glass but not acrylic. I have several scrubbers that have acrylic siliconed to glass. Caulk both sides of the acrylic and it will work fine for baffles in a sump. Acrylic to acrylic with silicone will fail.Can I add Acrylic divider in my Glass Sump?
How to join both ? I try silicon the divider just detached itself
Thank You for sharing40 gallon breeder convert into sump using a Fiji sump kit and Ge number 1 silicon. Gotta get 100 coverage with the seams and like a pervious reply stated let dry for 4 days or more. Mine waited a couple weeks while i drilled my 110 gallon and got my stand done. The sump buffles felt pretty solid and has been up and running for a couple of months now with no issues.