Ginge
Betta Extermination Team!!!
What size tank shoul i look at building a tank at e.g. to build a 20 is pointless cause you can buy a full 20G setup and stand for £120 where as to build one you might only save a small amount if any and it is hard work. How big would a tank need to be to make a substantual saving? I'm guesing big e.g. around 125G