The silicone seal holding the aquascape together has been underwater since I first filled the tank. Does this mean the silicone sealant will never cure underwater and always be toxic so I have to drain the tank water and so all the sealant can be exposed to air and dry out for like a week?
It should cure. Just may have taken longer. I have no idea the length though as curing silicone under water isn’t something normally done.
For gluing frags you just need plain super glue gel. Most department and hardware stores sell it.



