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Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!gryphon!richard
From: richard@gryphon.COM (Richard Sexton)
Newsgroups: rec.aquaria,alt.aquaria,sci.aquaria
Subject: Re: (F) Should I worry/Water hardness/ph
Summary: no, not really
Message-ID: <24902@gryphon.COM>
Date: 18 Jan 90 00:43:08 GMT
References: <15748@boulder.Colorado.EDU>
Reply-To: richard@gryphon.COM (Richard Sexton)
Organization: Trailing Edge Technology, Redondo Beach, CA
Lines: 23

In article <15748@boulder.Colorado.EDU> atk@tigger.colorado.edu (Alan T. Krantz) writes:
>	Hardness        Ph
>tap      ~40ppm         6.6
>t1       ~210ppm        7.0
>t2       ~320ppm        7.2
>
>Why am I concern about hardness - I was hoping for some baby angles -
>should I be concern about having hard water - and why would the tank
>water be so much harder then tap water? 

Chances are very high that calcerous gravel is pushing the hardness
up.

I can just hear the sound of your heart sink as the phrase
``change the gravel'' echos through the room.

I can't see why a peat filter would kill a tetra - makes no 
sense at all. The pH should not change that quickly.

You might try running it again and monitoring the pH and hardnes;
this may be your best shot at lowering the hardness. Hell, some
massive water changes miht do it also. You have very nice tap
water, I must say.