I bought a used 75gallon at a yard sale a while back for $20. I've been trying to get lids for it & I'm having trouble finding the correct ones. I bought Aequeon lids, but they are too small by 1/4-1/2in width. The only identifying labels I could find on the tank is a sticker with a MFG date of Mar2006 & an anchor emblem beside the date. Any idea what brand of tank I have and what lids I need?