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Water change ?
Posted: Mon Feb 07, 2005 11:42 am
by Tom Kvitnes
I usually change 1/3 of the water every 14 days.
I use cold tap water, and the temperatur falls about 4-5 degres celsius.
The adult zebras have no problem with this.
But now i have 4 little fry in the tank, will they survive it ?
Regards
Tom
Posted: Mon Feb 07, 2005 11:56 am
by Tristan
I am not sure about zebra fry but both malawi & discus fry that i have raised like water perameters to be identical. A fluctuation of temperature may well shock fry, but i will leave the opinion with zebras to others who have actually bred them.
Cheers
Tristan
Posted: Mon Feb 07, 2005 1:41 pm
by Adam
Hi Tom,
I'm sure that I read somewhere in another thread that Barbie still simulates rainy seasons dispite there being fry in the tank. She has had no problems if I remember correctly, best to check with her first as I'm at not sure how old her fry are.
Posted: Mon Feb 07, 2005 2:50 pm
by KenW
Hi Tom,
the thread that barbie mention continued rainy season with fry is below
http://www.zebrapleco.com/forum/viewtopic.php?t=324
titled: Technique/method of catching zebra fry
Good luck
Ken
Posted: Mon Feb 07, 2005 4:09 pm
by Dr. P
Personally I can't see it being a problem. In the wild there will always be some temperature fluctuations, fry or no fry.
If your worried about the temp dropping too much, here's a handly little calculator that can help....
"This program determines the temperature change that will be produced by conducting a partial water change using water that is of a different temperature to the aquarium water.
If you're adding cold water this program can also calculate how much boiling water you need to add in order to maintain a stable temperature in the tank."
http://www.practicalfishkeeping.co.uk/p ... ulator.php
Posted: Mon Feb 07, 2005 5:43 pm
by Barbie
Ooops, slow replying on this one, sorry! Yes, I still stimulate the rainy seasons with the fry still in the tank with no problems or losses. It MAY put the fry off feeding heavily for a day or two, so I'd assume they aren't fond of the idea, but they will definitely survive it. If you're worried, you could do half as much of a change every week so the tank temperature wouldn't fluctuate as far, also. 
Barbie
Posted: Mon Feb 07, 2005 9:30 pm
by Rob
Apology number two from me. Sorry for the late reply.
The only time I refrain from a "cold water change" is when I have eggs in a breeder, otherwise, I continue as usual.
I would suggest warming the water a little however if you are going to carry out any more than a 30% water change. Even just leaving it at room temp for a couple of hours should be enough.
Rob
Posted: Mon Feb 07, 2005 10:22 pm
by Tom Kvitnes
Thanks for the answers.
I have now changed about 20% with tap water and the fry seems ok.
Temp droppet from 29 degres celsius til about 26.5 degres celsius.
Posted a pick with 2 of the fry here, just had to
http://www.plecoworld.com/forum/viewtop ... =1045#1045
Regards
Tom