XMHFAquarium Fish Tank Undergravel Plastic Filter Board Air Tube 28pcs Black

Pieces fit together very easily and their small size allows for customizing the filter grid layout for irregularly sized tanks. The plates are 15/32" thick, so they hide nicely at the bottom of a small tank. The flow tube is easily adjustable, but does not slip. The air hose tubing for the top of the diffuser is pliable and usable (not the hard and short-lived stuff that some vendors provide).Kudos to the vendor! I mistakenly purchased the 28 piece kit instead of the 12 piece one. I requested a return/replacement and they immediately responded. I received the replacement within a couple of days. An all-round quality customer experience.

Needed more bubbler tubesIt’s a good system but the system that large needs more bubble tubes at least one more

Could be a little flimsy but you get what you pay for. Works fine.

To small for the price. Only abt 1/2 inch in height

I used with a external canister together and I love it

This worked great in my smaller tank that needed a little extra help to keep the water cycling.

Love this filters.

cut to fit an hexagon tank, hooked up to canister filter, should work great, update when I know