I am looking to buy the top glass for this tank - cant seem to find it - the tank is brand new - never used - I picked it up local not through a store. The top has recessed black plastic that obviously holds a top glass - Anyone know where I could buy - or should I just go to a glass cutter and have them cut? if I do that is there any particular glass to use? I don't want it to interfere with the LED's? Also I would assume it needs to be hinged so I can feed??