Problems using mulch as media
I am using hardwood mulch as media in my bato buckets. My vegetables and tomatoes are growing very well but my pump clogs with algae after about a week and I have to clean my reservoirs and lines with bleach. I've also tried adding hydrogen peroxide daily to my reservoirs. I also covered my reservoirs with black plastic to keep out the light. In addition I covered the pump with fine mesh. These things seem to help somewhat but I still have to constantly clean my system on a weekly basis. Do you have any suggestions? Would I be better off with wood chips rather than the mulch? Has anyone used small oval stones that they call anti skid material as media?