Hi there! 
Pretty annoying of me I guess... But I found this pretty mesh and I thought about getting it and make it as a lid for my 125L tank. But my only concern is if it is made out of steel or something else that is solid.
I’m thinking about getting possibly coolies so I need to know if the holes in the mesh are small enough for kuhli not to climb out?

Pretty annoying of me I guess... But I found this pretty mesh and I thought about getting it and make it as a lid for my 125L tank. But my only concern is if it is made out of steel or something else that is solid.
I’m thinking about getting possibly coolies so I need to know if the holes in the mesh are small enough for kuhli not to climb out?

Fish Tank Divider Mesh Netting Pond Baby 40cm X 45cm | eBay
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