Advertisement I tried coating a PVC elbow with aquarium silicone and then getting dried coco fiber to stick to it. I was trying to achieve a premade burrow look that I could semi bury as a starter hide. I've got no T in the enclosure now but I'm trying to experiment with different setups for my next couple of purchases. Anyway, after almost two days the silicone can still be smudged off by hand. I suspect the surface of the PVC is too slick for the silicone to bond properly. A few threads here mention a few different adhesives, but I'd like some other suggestions. Also, if I could paint the fitting brown to match the substrate if a proper paint was available. I'm up for trying anything and time is not of the essence, so fire away with any ideas you've been wanting to try. I'll give them a shot.