11-13-2009, 10:35 AM
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I have read the whole post, I stalked it for almost a month before I interjected...
I am saying mini-cycle because there is no stability in this tank. Every time you change something, you compromise the stability. Taking off the filter, adding a filter, adding rock, dieing fish, etc...these contirbute to fluctuations in bacterias and levels of organic compunds.
The hair algae can be contributed to the HOT filter, as those filter pads break ammonias into nitrites and nitrites into nitrates. The nitrates stay in the system (what isn't broken down by the Live Rock) and are a good food (along with phosphate) for algaes.
(Nitrates also have an adverse effect on the buffering system in your tank, read up on that here