Your lighting choice is good, that's what I use personally, except mine's 24 inches.
2. I also agree on your filtration, you can use a small filter for this tank to keep it clean as you're stocking it with bioload that is more than a couple of guppies. I also think frogs prefer calmer still waters, so a small filter/pump is in your favor.
3. Please describe to me your ideal plant, as there are many variations of moss and carpeting plants. Have you seen dwarf baby tears? they're pretty cute and they are leafy, so your frogs could easily hide in the carpet when the leaves grow tall enough.
Last edited by AVN; 10-07-2012 at 04:02 AM.
Reason: Read wrong!