Could u possibley find a pic of what u meanTank divider kits are the obvious choice
If not, you know those plastic things you hold documents together with? they are long and the length of a side of A4 paper. Well you can cut them to size and use aquarium sealant to hold them in place or clips, but you need to put the plastic holders on all 4 sides of the plastic mesh or else the fish might barsh through it
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