You found the right place. Most of us are plant geeks as well. At least i know i am......lol
As far as bugs, the only ones i have are in my 125. Tiny, tiny (about 1 or 2 mm) white guys. They don't bother my frogs, and they do a wonderful job attacking waste. I honestly cannot id them positively because they are so small, even with my bifocals on, they are still tiny.....lol my guess would be they are juvenile springtails?