K3 Bio Filter Media Moving Bed Biofilm Reactor (MBBR) for Aquaponics, Aquaculture, Hydroponics - Ponds - Aquariums by Wholesale Koi Farm (2 Cubic Feet)

It’s plastic biomedia, I don’t know how anyone could give it a bad review, it has a simple job that it performs well, that the product itself can’t mess up, human error could for sure; like I messed up. I wanted a moving bed for aquaponics and I ordered k1 which wasn’t moving around all that well, I bought k3 which I thought was specie for what I wanted to do but it was bigger and didn’t move around nearly as much as k1. I now have “micro” k1 biomedia on order and I truly believe it’s what I need for a moving bed biofilter. I truly hope I didn’t buy the wrong product again.

I bought this because I adding a moving bed filter to my 8k gallon koi pond and needed a way to greatly improve the biological filtration...so I can add more fish and feed them move. I used a 65 gallon garbage can from HD and bought an air bladder from Amazon. It worked perfectly, the media turned brownish after about 6 weeks, which meant the bacteria was colonized nicely. I'm very happy with this product.

Used for a three-barrel gravity feed pond filtration system, probably should have purchased more

Exelente

As described and works well.

This is the perfect media of you want to convert a pool sand filter into a pond filter. Smaller media comes out the backwash when cleaning. This is large enough so that won't happen.

Packaged nicely, and more than enough for my project.

These are very small, was not what I needed. Sent back.