as it says, I have two, one was free so I said hey whatever I'll put it on there. Its just a 15W 18" t8 bulb fixture and I also have a dual 14W 24" t5no fixture on there too.
What kind of lighting is this?
It would be a total of 43W over 25 gal (1.7WPG) that is 19" tall but theres 2x t5no and 1x t8 so I don't know if this changes anything.