Path: utzoo!hoptoad!amdahl!amdcad!decwrl!ucbvax!sdcsvax!ucsdhub!hp-sdd!hplabs!sdcrdcf!trwrb!trwind.TRW.COM!nrcvax!nrc-ut!andre
From: andre@nrc-ut.UUCP (Andre' Hut)
Newsgroups: alt.aquaria
Subject: Re: Information on filtration needed
Keywords: fish, tanks, water and other things terraquious (my turtle)
Message-ID: <360@nrc-ut.UUCP>
Date: 15 Dec 87 22:48:27 GMT
References: <539@ncrcan.Toronto.NCR.COM>
Reply-To: andre@nrc-ut.UUCP (Andre' Hut)
Distribution: alt
Organization: Network Research Corp.  Salt Lake City, UT
Lines: 42

In article <539@ncrcan.Toronto.NCR.COM> greg@ncrcan.UUCP writes:
>	I curretnly have a 75 gallon (CDN) tank.  I just recently installed
>	a new filter system using an EHIEM 2014 with the apropriate substrates
>	in the filter to do the type of filtering that I want.  My problem
>	is this:
>	I would like to feed the water from the EHIEM filter back through
>	the down tubes and up through the gravel, however, I am worried about
>	the amonia levels in the tank going sky high if I just turn the water
>	going through the down tubes around.

	Why should the direction of the water through the undergravel filter
	effect the ammonia level of the tank.  The water under the filter should
	be chemically about the same as the water above it.  After all, the
	water under is pumped back up isn't it?  You will probably shake loose
	some material when you switch it around, but that should soon settle
	back into one of the filters.

>	Question(s):
>		Is there anything wrong or potentially hazardous with the
>		manner in which my tank is set up now?

	Probably not.  But I happen to like reverse UG filters.

>		Can I switch the water flow in the down tubes around without
>		risk life and fin of my fish?

	Like I said, I don't see why it should be a problem.  If you are worried,
	monitor the water with one of the available Ammonia test kits.

	--Andre
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