I recently setup my 20g tall and its running nicely. However, the lighting I'm not sure about. It has a t8 bulb in the hood but the wattage is not marked. The tank is 24" long so I'm thinking that its an 18" bulb. Do you guys have any ideas? It is a planted tank and I haven't decided if I want to get into CO2
and ferts for this tank or not.