Is there a way to prevent "gunk" from building up or growing in the bottom if I plan to put LECA and maybe some moss? I've read that people haven't had any problems, but I'm skeptical about this...does anyone have any comments? Thanks again!
I doubt it. The tanks folks are building where the bottom stays permanent are really terrariums or vivariums where animals live. The "gunk" is a good thing there as it fertilizes the substrate. You will most likely end up with lots of algal buildup due to the high amount of light and moisture. Most frog tanks are misted lightly a couple times a day. Your orchid tank will need more frequent misting (just not a minute long.) Hope this helps, somewhat.
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