See this light here
? it says its a grow light but its only 4200k and 10 bucks.
I was going to get one for each of my 10g, but didnt. Because everyone rec the other, what 7500k color? I dont know which is best. Perhaps the 7500k color can get through the water better? I havent a clue.
Also, many plants are low light, like the ones i have. Mine are doing fine under the 35 led light I purchased. It was 35$ with off, on, and moon. Its supposed to make the water sparkle, but i dont see that really. But its for up to a 20gal, and I have it on a 4 gal, lol.
Also, I saw that having the leds a bit above the tank helps to get that sparkle look.
some lighting parameters here
"Freshwater Planted Aquariums: Fish, live plants, decorative wood and/or ceramics
Recommended lighting system: Standard fluorescent, T-5 HO, VHO, Power Compact, Metal Halide/HQI."