For depth of your tank, I might would buy two 54 watt T5HO bulb's with 5,000K to 8,000Kelvin rating.
Kelvin not as important to plant's as it is to your eye's or mine, so near any bulb's that are advertised as daylight or full spectrum will work.
Kelvin not as important to plant's as it is to your eye's or mine, so near any bulb's that are advertised as daylight or full spectrum will work.