How many water changes are required?
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Subject: How many water changes are required? Wed Dec 08, 2010 10:47 am
It is a widely accepted practice to do at least a 10% water change per week.
One of the major reasons for a water change is to reduce the Nitrates and to restore various micro and macro nutrients in the water. It is also widely accepted that you get better growth rates with frequent water changes due to a build up of certain hormones that limits growth. I often hear that the best pond is the pond that leaks.
The question is, how important is regular water changes and what is the best practice.
Obviously your type of filtration will affect the requirements. If you have a large bakkie shower for instance, a lot of the Nitrates will be degassed and fewer water changes will be required.
Will it be better to do a 1,4% per day as apposed to 10% per week. Surely it will limit sudden fluctuations in water parameters, thereby limiting stress? Why don't people rather go this route?
Is "more" also better? I found that if I do too many water changes (for instance 30% + at the same time), it causes cloudy water, flashing of koi, and sometimes loss of appetite. This indicates that the koi doesn't like it? Too much also decreases your biofilm in the pond, and too much often causes an algae bloom due to the amount of new nutrients. It also causes pH fluctuations which might affects the koi negatively.
Your quality of source water obviously plays a major role. Do you use borehole water free of chorines, or maybe borehole water with heavy metals or other negative substances?
How do you feel about water changes?
Subject: Re: How many water changes are required? Wed Dec 08, 2010 11:09 am
my pond het baie son en die waterval saam laat verloor redelik water saam met elke derde dag se backwash doen ek meer as `n 10 % waterchange per week dit het die gevolg dat ek so nou en dan moet sout op top om die flash weg te hou.
My vis bly nogsteeds baie honger en kan nie genoeg kos op `n slag kry nie
Subject: Re: How many water changes are required? Wed Dec 08, 2010 11:11 am
admin jy gaan anyway nou se ja jou poepol jy het nie my vraag beantwoord nie en ek kan nie want ek werk nie uit hoeveel water ek by tap nie ek gooi maar tot hy die merk moet bereik waar die pond moet le
by gese nadat ek met `n paar mense wat lank koi keepers is gepraat het het hulle bygedra dat met die grdrag van my vis en die eetlus wat hulle het ek nie fout maak nie volgends wat ek kan aflei sal die vis my gou wys as iets nie lekker is volgends hulle gemak nie
Subject: Re: How many water changes are required? Wed Dec 08, 2010 11:16 am
I'm guessing , I am quite fortunate our pond leaks roughly 10-15% a week. The problem is the pond is quite old, and the concrete is not so strong any more.
Subject: Re: How many water changes are required? Wed Dec 08, 2010 11:22 am
paul jy se 1.4 % per dag of 10 % per week hoe werk die mense dit uit wat outomatic top ups het met `n waterpyp permanent in die pond en `n toilet ballvalve
net vir intresantheid
Subject: Re: How many water changes are required? Wed Dec 08, 2010 11:34 am
Benarderde hoeveelheid water wat uitvloei tydens backwash / flush plus benaderde verdamping (met dien verstande jy het nie 'n lek nie) Mens kan natuurlik nooit die presiese hoeveelheid bepaal nie tensy jy 'n water meter op jou inlet sit. Ek het al 'n paar mense teegekom wat dit doen.
Subject: Re: How many water changes are required? Wed Dec 08, 2010 11:39 am
ek dink meskien dis `n goeie ding om te he as jy op vakansie gaan maar as elke dag se gebruik sonder `n meter gaan jy nie sommer agterkom jou pond lek nie of hoeveel hy lek nie
Subject: Re: How many water changes are required?