13 watts for a 20 and 26 for a 40 doesn’t sound like enough to me. The frogs would be fine with that amount of light, and you could probably grow some plants such as philodendrons with that amount of light alright, but light loving plants such as bromeliads wouldn’t work I don’t think. I just installed 120 watts in my 30 gal (see my post a little way down the list). As for shop lights, plenty of people use them with great success. They are just much larger than CFs.
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0.0.4 Blue Dendrobates Auratus
4.2.0 African Dwarf Frogs (Hymenochirus boettgeri)
2.3.0 Asian Floating Frogs (Occidozyga Lima)
1.1.0 White's Tree Frog (Litoria caerulea)