green water blooms

[jadeguppy]

I just read an interresting article about phytoplanton blooms. Although it was about kio ponds, the same principle may apply. Those that have had a problem with a bloom in the past or currently, how much live rock or other surface area did/ do you have in the tank?

Here is the article if you want to read it.
http://www.vcnet.com/koi_net/GRENH2O.html