filter housing

Hi everyone I'm planning to build a custom RO system with pump instead of buying a pre-made one, and have stuck with 10" transparent filter housing selection on Amazon. There are too many housings of different brands, and even those with high ratings have feedbacks that they leak or crack...

Probably nothing new to most, but here's my latest iteration of my homemade biopellet reactor. Total cost was $25. Constructed with a transparent water filter housing, there's a plastic tube glued into the housing base at the bottom with holes drilled around the bottom end for flow velocity. A...