Wow, great work! I'd be curious to know if the FHM like the PVC pipe for spawning. It seems like they would love it and it would work great, although many of the posts on the forum suggest they need flat surfaces.
You have the ability to pull them out anytime and look for eggs on the inside of the pipes. That is going to help us all learn if flat or curved really matters as long as there are cavities they can go inside.
