Today I purchased a small tube of 100% clear silicone, a 10 foot long PVC
pipe with a 3/4 inch diameter and some 6 inch by 9 inch clear plexiglass. These will become a tower. The fish will be able to swim in and out of the lower levels. The top level will have two ramps and will be dry. This will become a basking area for our turtle.
I also bought two short 4 inch diameter pipes which will become a cave. I have already begun to cover one of them with silicone and gravel.
My question is how long do I need to wait for the silicone to dry before placing items I create into my fish tanks?