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post #1 of 19 (permalink) Old 08-22-2012, 05:29 AM Thread Starter
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50% water changes

So, I just ordered some dry ferts from GLA (NPK+CSM&B) and I understand the dosing regime routine, but I am still skeptical about the 50% water changes.

I have a 10 gallon tank so I understand I'll be dosing about 1/4 tsp or less of everything, and then a 50% water change on [Sunday] or whatever day I choose.

Every time I've done a 50% (or more) water change to my 10g, I've lost fish as a result. Is that a side effect of the EI dosing routine? Do I need to be super anal about the new water coming in now?

Now granted, the particular experience I'm talking about was in my earlier experience in the hobby. I freaked out over the color of the dirty water and did a 55ish percent water change without checking the temps & I kind of dumped the new water in very quickly and lost a black moor & telescope goldfish a few days later.

Can someone ensure me that 50% water changes are necessary and maybe instruct me on a proper way to conduct them?
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post #2 of 19 (permalink) Old 08-22-2012, 06:11 AM
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SF water and about 100+ SFBAAPS members have no issues with large water changes.

If you do frequent water changes.........then the tap and tank should be close, if you do them once every 3-6 months, well............




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post #3 of 19 (permalink) Old 08-22-2012, 05:32 PM
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U could 50% water changes but insure that include water conditioner. I'll do a 50% about once a month when I change my filter.. Other than that I do partials 25%.. When I used sand a subtrate I spent almost a whole day cleaning it.. Intil water bucket filled and I was able to the sand without cloudiness.. 10 gl there's much room for error.. Be careful when trying new things .. Good luck
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post #4 of 19 (permalink) Old 08-22-2012, 07:00 PM
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i do a 70-80% water change weekly. summer and winter. fish are as healthy as can be

as plantbrain said. if you do regular water changes. the tap and tank water should be much the same and stress will not happen

even dropping the tank 20 degrees wont kill many if any healthy fish

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post #5 of 19 (permalink) Old 08-22-2012, 07:02 PM
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You could do 25% twice a week...
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post #6 of 19 (permalink) Old 08-22-2012, 07:03 PM
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Thats really weird that your losing fish to water changes, I do 50% everyday and i have yet to see something happen to my fish...

Odd.

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post #7 of 19 (permalink) Old 08-22-2012, 07:32 PM
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May consider to pre-treat and age your water first before the water change. Something in the water it is causing your fish to die. I do 80% water change per week. 2 40% in a week. I age my water for at least 24 hours to 48 hours and adding conditioner as well.


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post #8 of 19 (permalink) Old 08-22-2012, 07:41 PM
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I also do large water changes. No deaths from that.

Also waiting 24 hours for your water to gas off chlorine and such and using a dechlore seems a bit much. The dechlore does what letting the water sit does instantly.

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post #9 of 19 (permalink) Old 08-22-2012, 08:31 PM
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Quote:
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You could do 25% twice a week...
25% twise a week is not equal to 50% WC
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post #10 of 19 (permalink) Old 08-22-2012, 09:59 PM
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Quote:
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25% twise a week is not equal to 50% WC
As far as removing excess ferts from the water it should be, unless you dose your tank just 1 or 2 consecutive days. Right?
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post #11 of 19 (permalink) Old 08-22-2012, 11:24 PM
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Two half size water changes don't equal one full size change, because the second one removes less of the old water, since it has been diluted by the first change.

Never neglect to add a dechlorinator, like Prime, when you do any water change bigger than 10-15%.

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post #12 of 19 (permalink) Old 08-23-2012, 01:37 AM Thread Starter
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Quote:
Originally Posted by oscarsx View Post
Thats really weird that your losing fish to water changes, I do 50% everyday and i have yet to see something happen to my fish...

Odd.

- Oz
^^ I was speaking of a 1 time experience that spooked me from ever doing it again lol.

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Originally Posted by jeremyTR View Post
I also do large water changes. No deaths from that.

Also waiting 24 hours for your water to gas off chlorine and such and using a dechlore seems a bit much. The dechlore does what letting the water sit does instantly.

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I have a filtered water tap in my home. I just dump it straight in. But when I'm set up at college, that is exactly what I do. No casualties from that

Quote:
Originally Posted by plantbrain View Post
SF water and about 100+ SFBAAPS members have no issues with large water changes.

If you do frequent water changes.........then the tap and tank should be close, if you do them once every 3-6 months, well............

^Boom. Thanks Tom. I'll keep that in mind this next time around.

I'm moving back to school next week. Can't wait to dive into high tech, pressurized CO2 & EI dosing! Oh and, 50% water changes
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post #13 of 19 (permalink) Old 08-23-2012, 07:06 PM
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70% weekly water change and rams are healthy and breeding.

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post #14 of 19 (permalink) Old 08-23-2012, 07:13 PM
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Originally Posted by HD Blazingwolf View Post
i do a 70-80% water change weekly. summer and winter. fish are as healthy as can be

as plantbrain said. if you do regular water changes. the tap and tank water should be much the same and stress will not happen

even dropping the tank 20 degrees wont kill many if any healthy fish
I disagree. If you have a warm tank, and splash ice cold water onto fish, they can easily die from shock.


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post #15 of 19 (permalink) Old 08-23-2012, 10:02 PM
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I disagree. If you have a warm tank, and splash ice cold water onto fish, they can easily die from shock.
Nope. I took a zebra danio out of my tank and plopped it into cold toilet water and it was still alive.

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