WH turning yellow
 

WH have been in the waterfall, they were green and are now yellowing, not
dying, just "look" hungry. How does one "feed" pond plants. Figure the
ones in the pond (that are very happy) are getting enough nitrogen, but that
the WH since they are in waterfall, after the filters are not getting
enough? or too many in a small space. I know newbie question. Yes I have
goldfish.

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