12Pcs Aquarium Fish Tank Divider Plastic Egg Crate Aquarium Filter Bottom Tray Grid Isolation Board Partition Net Pane Separator for Mixed Breeding Light Diffuser,15Pcs Sucker Clips Suction Cups,Black

First, I tried like others (I’m sure) to do something other than trying to act as a divider in an aquarium. I strongly urge people to reconsider unless they actually need it for that purpose, or similar applications. But these are not standard eggcrate by a long shot. Slightly smaller cells, and much thinner in width, which deprives it of any rigidity. This stuff flexes with no effort, and they even post a photo demonstrating this with some hands twisting them. I was going to use this as a lid/topper for a 40 gal turtle tank, also needing to support 2lbs of weight. Not happening with these!That said, the product will do EXACTLY what they are selling it for. I can see multiple applications in the aquaria world. Fish breeders especially, these can be used to easily provide fry a refuge that adults cannot get into. I am keeping my set to setup a grow area for water lettuce inside my sump in an area that otherwise would clog up the next wier/filter floss area… two panels of these will easily keep the plants sequestered so they can grow for nitrate export.I did mark it down 1 star. These panels are really tough to fit together. I got a few pieces together by hand, but nearly considered a rubber mallet to assist.