cant help with specifics but you should try to find a complany that does acrylic or plastics in your area, avoid shipping all together. there are definitely a lot of people who build plywood tanks, i've even built one myself. i, like a lot of other people, found mine to be more of a headache due to leaks and such. it depends on how you seal it of course. mine lasted for a while and then sprung a leak in the back. i've also heard a lot of stories of the sealant failing after a couple years. next time i build a tank i'm going to try to due acrylic just because it seems more durable. thats just my opinion of course, it is no doubt cheaper to go plywood though.