Mark Harringtom
New Member
I’m going to be using an old aquarium with no lid It used to have a hood with light etc (it broke and was removed long ago.) I am thinking of getting a piece of clear acrylic cut or buying a sheet and cutting it to size but unsure of the thickness that would be best, tank is glass and has a plastic rim so it has a frame to rest on. Size around 420mm x 240mm would a 3mm or 4mm thick piece of acrylic be best?