I'd get a glass top usually made by perfecto or called Versa tops. And then measure the length of your tank (I'm not familiar with 50g off the top of my head) and look up lights with that measurement. I like T5 lights and some people like led
For yours you can purchase a plant bulb with the spectrum specific to plants buy with a tank that I am assuming is deep that kind of light won't really reach plants on the bottom of the tank. Some brands sold in the US are Fluval, Current, aquaticlife, zoomed. If this tank is not for display in your high traffic area you could just buy shop lights and hang them above the tank. I have T5 and T5 HO
lights from the hardware store. Oh and here's a tip. On the very end of the bulb there should be writing and numbers unless it's led
. So look for the bulb to say T12, T10, T8, T5 and T5 HO
. That tells you what kind of light you have easier than going by watts at least here it does. In the store they are grouped by the T and then the number.
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