Probably need a few LEDs and widely spaced apart. The light band tends to be quite narrow with LEDs and if it's on the lid, they'll be pretty close to the substrate.
I've got ten individual LEDs on what amounts to a rice bowl-sized tank and it is barely adequate.
Yeah, I have a couple of 1 gallon pickle jars. They started out as holding pens. One for the guppy fry and one for baby shrimp siphoned out of the bigger tanks during cleaning. Since then, they have become their own "environments" with moss and a bit of java fern. With the moss, no other filtration needed. I just change about 1/3 of the water each week.
i had the same sort of idea but i used a vase i found, and a pump from a cheap uv purifier that i stuffed with filter floss packed around a tube hooked to a diy co2 and a hanging 25watt cfl been going for around 3 weeks just dwarf hairgrass and 1 bacopa stem not to bad on algea the stuff on the grass was from my big tank i stole the grass to start this mini mutant!
Well, I thought I had an empty pickle jar, but could not find it. I am working on emptying the one I have. I put a bunch of the pickles in a baggy to bring to work, LOL While looking for the empty pickle jar I did find a sun tea jug! But the wife put her foot down and said I was not going to scrub the paint off of her tea jug and put sea-weed in it.