Budget Media Reactors

[Aquatic Spendthrift]

canister filter pre-filters can easily be used as media rectors and may not even require modification depending on what it is used for.
not sure if it counts as a diy tho
https://www.ebay.com/itm/Aquarium-F...m=263858060610&_trksid=p2047675.c100752.m1982
or
https://www.ebay.com/itm/Sunsun-Tra...6034f0d14:m:mYyhSDBetarhkFI3apnQ77Q:rk:1:pf:0

 

[Flippers4pups]

Cool idea. I like!