45 /gallon Hexagon undergravel filter?

[Crazy55]

My Hex tank Dimensions is from flat to flat is right at 20 inches, from point to point it is 22 inches, Where can you buy a good undergravel filter for it? I use a single powerhead for the filter system. All the ones I find online are much smaller.

 

[Delapool]

Hi, it's been ages since I had an ugf but I can remember buying two one time and cutting the ugf plates to fit the tank.