I had the same thing happen when I first set up my aquarium. Too many
nutrients in the water and too much light. I tried a blackout, water
changes, etc. It got so bad that I could literally not see into the tank. It
was completely pea soup.

I finally purchased a UV sterilizer and the water cleared up within 48
hours. I've left it on ever since and have never had a problem with floating
algae again.

"Flatspin" wrote in message
news:tO64d.217974$4o.129877@fed1read01...
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