I have been running these on all my planter aquariums and they do a good job. Come in multiple sizes as well
https://www.amazon.com/dp/B00X84LVH6/ref=cm_sw_r_cp_api_fabc_HxeTFb2VS12G0?_encoding=UTF8&psc=1
I use a small Jungle Dawn LED inside the stock ExoTerra hood on my setup. it provides a crazy amount of light while remaining cool to the touch and not cheaping out on the color spectrum. My plants arent particularly picky (just some bromeliads, Philodendron, Pilea, moss etc) but theyre growing really nicely. If the form factor isnt what your after, the same site has some other options from Current USA, who make a lot of very well-regarded lights for aquarium hobby.
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More generally, any LED/flourescent light intended to grow plants will be fine, since dart frogs are ambivalent to UVB, and heating is often easier to accomplish with an under-tank heater and a thermostat. Amazon has tons of great aquarium lights ranging from the $20 Chinese ones (a buddy of mine runs this on his big ExoTerra with tincts) up to much pricier options from more well-established brands and plenty of stuff intended for herps. Just scope out a good mix of price and form factor.
I have this light in varying sizes on several tanks and everything is frowning great.
https://www.amazon.com/dp/B00X84LVH6/ref=cm_sw_r_cp_api_i_LAygFbF2DVF5Z
I have these on my 20 talls and they work great
https://www.amazon.com/dp/B00X84LVH6/ref=cm_sw_r_cp_api_i_vCf5CbDYTYGVJ
Good points. Maybe I could put a glass plate on it to at least protect from splashes. If not, would one of these be bright enough maybe?
https://www.amazon.com/dp/B00X84LVH6/ref=cm_sw_r_cp_api_yT-ZybD8EH493