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[APD] Diffusors

At 10:08 9/23/2005, Tom Barr wrote:
>Disc are smaller, but need cleaned more often to be used consistently.

Tom, I think this depends a lot on incoming water properties.  In SF 
with very clean water, I need to clean my disk about every five 
years.   But I have customers with very hard water that seem to 
precipitate CaCO3 on the disk.  And some folks seem to grow algae on 
the disk, my guess is they have a very acid-tolerant strain of algae 
that I do not have.   So I recommend that those without mega-hard 
water try a small disk diffusor, such as the Eheim.

Dave Gomberg, San Francisco    NE5EE       gomberg1 at  wcf dot com
http://www.wcf.com/co2iron for low cost CO2 systems that work!
500th System Sale: 6 Fabco needle valves and 6 Eheim diffusors
  Regularly $300 postpaid, now $200 postpaid   Gas those other tanks!

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