hello every one this is my first post im new to the aqarium world an i found an awsome tank its 48 inches by 24 inches high by almost 36 inches wide i think .but it has a 2 inch hole drilled in the bottom for a filtration system . i can get the tank for 50 buck i can patch it with piece of glass an silicone correct . also the guy had a bearded dragon in it for 3 years can i get this tank clean or should i leave it alone . also how much is filtration for something like this going to cost me