I used a off brand scrubber and it sucked ass my whole house stunk, I Imagine a homemade one won't be very good also. But I'm not saying don't try it. It could work maybe your grow is smaller but if you want a solid filter get the can-filter brand.
yeh i know they are not good but i am only thinking of a two plant scrog so im hoping it will be sweet. a few people on here have used them and said they were algood so yeh...