Update - I've been searching on the internet for a while now even on FB marketplace and Gumtree and found some decent-looking stuff. Even a perfect condition 60L that's a 30-minute drive away for only £30 from a breeder. The only problem is that the size tank won't fit in the intended space. On the other hand, I might have found a tank for a decent price including delivery as well. It's a 25L 40cm (length) with 4mm glass. Again I won't be getting a new tank right away as my priority is growing up my sawbwa fry until I can sell them on. So a look for a 2nd hand tank after Christmas will definitely happen. One other question also. I may have access to a 3D printer soon which means I could make a DIY Brace/Rim for a tank. Would that help keep the glass and overall structure of the aquarium stronger and from bowing??