"NJ" wrote in message
...
snip
My water lettuce aren't browning or crisping; they have just turned
totally
pale yellow, and I have noticed that the soft, hairlike rootlets on them
are
dark and/or nonexistent. They have begun to get mushy and grey, so I have
taken them all out of the pond. My lilies have sent up a legion of pads,
so
that and the rampant anacharis may end up providing the coverage I need
for
continued clear water. The water lettuce enjoy dappled morning sun and
total afternoon shade. I think it must have been some sort of bug
infestation.
snip

My lettuce is also yellowing. I was hoping this was a nutrient thing. I have
started feeding the fish, and also started adding Potash.

BV.