Someone suggested a few months ago that I should replace my feeding ring with one from polysterene, with holes in it and plant water cress in it. (I cant find the original post)
This is what I thought was meant:
The holes go right through into the water. The water cress was growing Or should I just put in the quite nicely and my daughter "planted"/put it in the holes.
Within a few days there was not a sign of any water cress. I suppose the koi ate it??
Any suggestions? Or should I just leave some of the plants in the water stream?