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- Newsgroups: rec.aquaria
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!pprior
- From: pprior@magnus.acs.ohio-state.edu (Paul A Prior)
- Subject: Re: High nitrates [M][FILTRATION]
- Message-ID: <1992Dec23.165155.1946@magnus.acs.ohio-state.edu>
- Sender: news@magnus.acs.ohio-state.edu
- Nntp-Posting-Host: bottom.magnus.acs.ohio-state.edu
- Organization: The Ohio State University
- References: <230@trident.datasys.swri.edu> <o4w5VB7w165w@cerianthus.pinetree.org> <1ha2jjINNnrl@hayaku.protocol.zycad.com>
- Date: Wed, 23 Dec 1992 16:51:55 GMT
- Lines: 46
-
- In article <1ha2jjINNnrl@hayaku.protocol.zycad.com> dominick@protocol.zycad.com writes:
- >
- >|> First, change as much of the water as you can. Changing 20% only reduces the
- >|> nitrate by 20%. Change 99% if you can.
- >|>
- >I hope you're kidding about the 99% change. I wouldn't go any further than
- >50% (and that's if you're really in trouble). Changing 25% every other day
- >for about a week will drop your nitrates significantly given that the water
- >you're adding has 0 ppm nitates. Once you're nitrates drop, 10% changes
- >weekly should keep it down.
- >
- >I just didn't want any novices doing 99% water changes, and then wondering why
- >all their fish/inverts were dead within a week do their biological filter
- >bed going south :-).
-
- I would disagree. Although it is clearly an exageration to say 99%
- water change, serial changes of smaller amounts does not make as much
- of an impact on nitrate levels (serial dilutions as the series progresses.
- Do the math if you want...<G>). If your goal is to keep nutrient levels
- under control and you method is to do water changes, you will be more
- successful doing monthly 40% water changes than weekly 10%.
-
- However, if you want to keep a steady supply of the good stuff coming in,
- then more frequent changes are beneficial.
-
- Also, of course, if you are doing larger changes (>20%) then it is much,
- more important to match salinity, temperature and pH so as not to cause
- a huge fluctuation in the tank.
-
- There was a very good article on this sometime last year in AFM. I
- don't remember when (it may have even been the year before), but the
- article dealt with dilution effects on medications and nutrient levels
- with various water changing strategies. It's all pretty basic math,
- but he made it very clear.
-
- Cheers,
- Paul "Surgery final in 2 hours" Prior
-
-
-
-
- --
- --------pprior@magnus.acs.ohio-state.edu----(614) 621-8240----------------
- Paul A. Prior Ban anchors, not reef tanks Nuke Gay Whales for Jesus
- 3rd year medical student - Surgery Rotation
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-