View Full Version : Water Changes

12-13-2006, 02:29 PM
Since I have been keeping Africans (fish that is) I have been doing water changes of 75%/week (25% three times/week). My question is: Is this too much? Is there really any difference in doing say 50%/week. Is there a certain Law of Diminishing Returns that applies here?

I am in the belief that the more the merrier as long as you are consistant. My wife (who really has no interest in fish) asked me why I don't just add water when it evaporates LOL (God help my fish if anything happens to me).


12-13-2006, 02:34 PM
Provided the water chemistry is fairly constant you should be fine with 75% changes. You could possibly reduce the amount if you were to study your nitrate build up.

12-13-2006, 03:23 PM
Originally posted by MisterW
Since I have been keeping Africans (fish that is)

:rofl: Thanks for clearing that up....we thought for a minute they were humans. :rofl2:

12-13-2006, 03:27 PM
You guys are horrible! hahah u still make me laugh though...(does that make me horrible?):lol:

12-13-2006, 03:45 PM
Originally posted by balton777
:rofl: Thanks for clearing that up....we thought for a minute they were humans. :rofl2:

You will have to excuse my sense of humour......I am of English decent.
Just don't ask me about my Cubans!

12-13-2006, 06:06 PM

12-20-2006, 05:57 PM
I do about 50% every 7-10 days in my 125 gallon african tank and everything is fine. You should be ok as long as the tank is well established. I have sand so 50% is almost mandatory to get the tank to clear up again in a reasonable amount of time after I stir the sand and kick up waste with a turkey baster.

12-22-2006, 01:02 AM
I would take Glaives advice and monitor your nitrates ...

Every tank is different depending on stocking levels

ex. 1 fish in a 150 gallon tank doesn't require water changes as often as a 150 gallon tank with 50 mbuna in it

The frequency of your water changes is dependent on your stocking levels, a cheap nitrate kit will help you find out the best schedule for your setup