[AnotherUnixGeek]

So what happens when they stop dumping Iron Sulfate into the water?.....................

Presumably the phytoplankton bloom ends, and presumably the salmon fry have dispersed from the area and are no longer dependent on the food chain which the phytoplankton was the basis for. The next dump of iron sulfate would then happen prior to the next salmon hatching period. Seems like a great idea.

[TexasFreeper2009]

I like the idea and results, but wonder if it is wise to train all of the predators to come there to eat... and then if we stop... they die in mass I guess?

This is sort of like feeding the bears, after awhile they learn to just wait around to be fed.