I'm trying to setup a grow out tank for my plants so I could use them for my future fry tank.. So far I got the substrate I need. Next is the lighting.. What do I even look for? wattage or lumens?
I found a t5 3ft double bulb light fixture that holds two 21 watt bulbs and I "think" around 3500k lumens each, would that work? Its not an aquarium light fixture but was wondering if it'd work?
Going to be using it on a 20gallon long tank
Just don't want to spend an arm and a leg... looking for the cheapest way to go lol...