I want your honest opinion on this cage if it would work so I was thinking would it work if I done a 3x4 cage with a 2x3 loft (the cage will be for 2 guinea pigs) and for the grids I will get 2 pack from kmart and then for the base I will get cardboard and make it waterproof by putting fablon all over it (I have already tried it and it works really well) the reason why I was going 2 use cardboard is because I cant get corroplas from anywhere without paying like £50