i am starting to breed fish and sooo in my aquarium i need to make 2 dividers (3 sections) Male female and unsorted fry/birthing i want to make them dirt cheap a material i havr thought of is plastic canvas (the stuff used with yarn) i think i can get sheets lrg enuf 2 not have 2 join peices my big question is how to to secure it to the sides without making holes lrg enough for fry to get thru (duct tape may be mans greatest invention but the fry might kiss it and get stuck LOL )