Try reading this article:

http://www.melevsreef.com/gha.html

Marc


Iain wrote:

Green grass growing on rocks. It spreads like crazy

I hate hate hate hate it.

Phosphate is not a problem

I pull it off the rocks with tweezers. It's like mowing the lawn, it just
comes back faster

I hate it... You get my point here


Any ideas



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