My Koy love the food I bought but the pellets are verry small, so do you have more of a mid size pellet, I would buy that next time? Also we spoke about pond plants that you sell. My pond is 4' deep and the plants thay want that you sell (lilly pads with a white and yellow flower) would need to be raised off the pond floor in order to survive in my poned. Could I make out of Copper tubbing a stand for these plants and would the copper be good for the fish or should I not use Copper? I Need to use some kind of tubbing inorder to create at least a one foot open space between the ponds concrete floor to the under side of the plant buckets. I could also build the the stand out of PVC but I read that Copper was benificial to the health of the Koy, is that true?