Uncureable desease

Question
That could have been the problem cause i scraped off the mineral growth but i waited for it to cool before doing that.Could the mineral growth have bee from the hard water? these are not east african in general are they? there's the one parrot cichlid and the common plain cichlids.
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Followup To

Question -
I meant buffer for the hard water. How do I remove the calcium and magnesium? the Parrot cichlid died the next night. The others have been fine, so far. I treated them with aquarisol and they have been good. My heater had some hard kind of mineral growth on it and I scraped it off but it grew back like 2 days later then it exploded on Friday morning. conditioners .how ever I still don't know what was wrong in the first place. I don't know if you have used aquarisol but it is a treatment for all parasites, but so mild I don't have to remove the invertebrates or the active carbon.

Followup To

Question -

-- Ron
  rcoleman@cichlidresearch.com
  Cichlid Research Home Page <http://cichlidresearch.com>

Answer -
Hi Rebecca,
 Sorry but I was out of town for a while there.  How is the fish doing?  

  I'm not sure what you mean by "buffer the water"?  Do you mean buffer it for temperature?

-- Ron
  rcoleman@cichlidresearch.com
  Cichlid Research Home Page <http://cichlidresearch.com>


Answer -
Hi Rebecca,
  Dealing with very hard water is a problem.  You have two choices: fight it or go with it.  To fight it, you use a Reverse Osmosis unit to create essentially distilled water and use that.  This is very expensive.  The other alternative, namely go with it, is what most people do.  By that I mean that they keep fish that like hard water.  For example, cichlids from East Africa love hard water.  

  I've never used aquarisol so I can't say anything about that.

  It is really strange that your heater exploded.  Was it out of the water too long while it was hot?  

-- Ron
  rcoleman@cichlidresearch.com
  Cichlid Research Home Page <http://cichlidresearch.com>


Answer
Hi Rebecca,
 Yes, the mineral growth is definitely from the hard water. That is one of the unfortunate side effects of hard water.  It also forms a film on the glass of the tank, particularly at the water line.

 The parrot cichlid is a manmade cichlid that comes from one Central American cichlid (the midas cichlid) and one South American cichlid (the severum).

-- Ron
  rcoleman@cichlidresearch.com
  Cichlid Research Home Page <http://cichlidresearch.com>