I also have 2 buckets of regular matrix in the filter after the K-1 no bags just glass particiansI know nothing about K1 -- well a little from what I've read. I just stopped in to ask YOU questions.
I know K1 is more "high volume" bio-filtration. I understand people with Ray tanks like it for ammonia spikes that happen after feeding Rays.
could you run pond matrix in laundry bags in a sump with Rays? would that be adequate you think? That's what I run, I'm considering some Rays, wondering if I have enough bio-filtration.

