I??ve followed a lot of Bucket tutorials and a recurring problem for many is roots clogging drain lines. I haven??t come up with any foolproof ideas?..yet. So far the best that I can come up with is a layer before the ebb & flow filter. Brass screen is available. Any ideas on the use of brass and the compatibility with the all the nutrient chemistry going on.
Would aquarium silicone be the appropriate glue?

May your buckets always drain,
Horsemanrocks.