8 Pcs Large Aquarium Fish Tank Divider 11.8x11.8Inch Egg Crate Aquarium Filter Bottom Divider Tray Grid Isolation Board Partition Separator with 10 Pcs Sucker Clips for Mixed Breeding Light Diffuser

I am using this to divide my 180 gallon aquarium so I can have species that are too aggressive to keep together otherwise. The sucktion power is good and I used metal shears to cut off the parts I didn’t need easily.2 panels had broken sections of grid (right in the middle) upon arrival, but I ended up only needing 6 panels for the tank so the broken ones didn’t get used. I had enough suction cups, but just barely; I wish there was an extra/backup set. I do recommend for value for price.

I like these pieces because they are modular

I use these to diver my 125 gallytank when my fish lay eggs. Works well

The hopes on this divider are large. A fish the size of a Betta or guppy will get stuck in the hole.

I've never spent $25 to aggravate myself this much. I'm sure they quirk fine for fish dividers but these float and you're likely to break them trying to force a frag in the squares. I should have checked the hole sizes before wasting all that time fitting them together