KingMaddog
Aquarium Advice Activist
I have some flat slate stones I found in my yard and cleaned them up really good. I want to know if there is an adhesive safe for fish that I can use to make a cave and cool formations out of them.
I would check at your lsf and ask for a product called holdfast. Or a rock glue. I WOULD NOT take a chance in going into a hardware store and asking for pure silicone or something. You can kill all your fish and know even know what happens. I've learned this from experience.
The silicone I recommended is/has been used many many many many times in the past and still to date is being used. I can 100% guarantee nothing bad will come from the clear GE1 Window and door silicone.