Trick question as green water is caused by algae! The real question,
what caused the algae?

Craig Brye wrote:

I'm just wondering what the consensus on what the cause of green water
is now a days?

I've heard everything from too much Fe, too much Nitrates, too much NH4,
etc. I don't have green water currently, but I did get it a lot when I
first got into plants a few years ago. I really struggled back then to
cure it.

Just curious as to what people think the cause is.

--
Craig Brye
University of Phoenix Online