I think the plastic habitat you have posted is awesome. However, I don't think it is dense enough to hide GSH fry in a pond without vegetative cover.
If you are super worried about adding organic material, you can just start a bonfire and stick the cedar in it for 30 seconds and burn off all of the needles. (Someone on the forum cleaned their's with fire, but I can't remember who?)
I was just thinking that with the trunk on the bank, all swimmers can easily see them, and you can pull them out at any time when they are starting to decay and/or pi$$ing you off!
I can't remember, did you put BG in your new pond? There have been mixed reviews on Pond Boss about them nipping at swimmers. If this is the main swimming pond for your family, I would be interested to hear if lots of swimmers teaches the BG to stay away, or if they become acclimated to swimmers and lose all fear?
