Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!hellgate.utah.edu!elan.utah.edu!hutching
From: hutching%elan.utah.edu@cs.utah.edu (Brad Hutchings)
Newsgroups: alt.aquaria
Subject: Re: raising pH in a marine tank..
Message-ID: <1990Jan16.124945.28634@hellgate.utah.edu>
Date: 16 Jan 90 19:49:45 GMT
References: <25AED539.16687@paris.ics.uci.edu> <2445@legs.UUCP>
Distribution: usa
Organization: University of Utah CS Dept
Lines: 16

In article <2445@legs.UUCP> greg@legs.UUCP (Greg Ebert) writes:
>In article <25AED539.16687@paris.ics.uci.edu>, rang@paris.ics.uci.edu (Roger Penaranda Jr. Ang) writes:
>> Hi there,
>> 	I'm just about ready to start up a marine tank.  Just need to
>> raise the pH a tad (it's 7.9 right now). 
>
>	Do you have enough crushed coral in the bottom ? It is a natural
>	pH buffer which will 'dissolve' until acidic water is brought
>	up to 8.3-8.4 . Be careful about your pH test kit. If it's old,
>	dirty, contaminated, wrong water temp, it won't be accurate.

According to Moe, crushed coral will only start to regulate PH when it
is down around 7.7-7.8 (somewhere around there, I can't remember exactly).
Crushed coral will *not* bring the pH up from 7.9

Brad