Floating aquascape adhesive

[GregOyeah]

Hey all, for everyone that has done a floating aquascape before, what kind of adhesive did you use to mount your acrylic shelf to the back glass???

I used an aquarium safe silicone sealant on mine, let it cure for about 48hrs and it looked solid but after I stared gluing and mounting rocks to it, I woke up this morning to see it sitting at the bottom of the tank.

Any help would be appreciated

 

[william Lutman]

Following

 

[muffinmanXL]

Not sure if you're still looking but I used this stuff to support a floating acrylic shelf in my tank:

POLYMERSHAPES 100% Silicone 2.8 oz. Clear Caulk and Sealant for Plastic Sheets GE-57 - The Home Depot

Made of 100% silicone, this 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

It is advertised to be effective on plastics
It is NOT advertised as aquarium-safe - so just give it plenty of time to cure before getting the tank wet

 

[REEFLIFE.27]

Not sure if you're still looking but I used this stuff to support a floating acrylic shelf in my tank:

POLYMERSHAPES 100% Silicone 2.8 oz. Clear Caulk and Sealant for Plastic Sheets GE-57 - The Home Depot

Made of 100% silicone, this 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

It is advertised to be effective on plastics
It is NOT advertised as aquarium-safe - so just give it plenty of time to cure before getting the tank wet

How long did you let it cure for ?