Yes I did confuse my bulbs. It's called the Powersun UV by Zoo Med. It is 100 watt and says it produces UVA and UVB. It is a self ballasted mercury vapor bulb. My question is whether this bulb will produce adequate amounts of UVB. It will be for a Blue Tongue Skink in a 75 gallon aquarium. Roughly 48'' L 18'' W 20'' H It is a little high but I will add 3-4 inches of substrate and a raised basking area.