root control disc

I'm running a ebb and flow bucket system, and been having problems with the roots plugging the fill/drain fitting
and sometimes a foot or so inside the 3/4 " hose. This cycle I'm trying the root control disc, which has a non soluble copper type paint on one side that kills the roots. The ones I'm using is 10" diameter that fit nicely in the bottom of my 31/2 gallon buckets copper side down. The question i have is, since copper is an anti-fungal, also used in disease control on plants will it kill my bennies. I'm using hydroguard and mammoth p.

thanks for any input

I'm using both and didnt have any issues. Did you notice the copper wear off after some use?

This is my first cycle with them. Since i started using them tho, i found a place that sells the treated fabric in big rolls. Its not painted like the disc I'm using now, but is supposed to work the same. the fabric is Tex-r