Water Changes

IceH2O

IceH2O

Bazinga
Nov 26, 2005
1,682
60
51
Rock Hill,South Carolina
Real Name
Ice
Just a quick question i've always wondered about..

Since I can't do a 50% WC due to the size of a GF would it benifit the tank to do say a 40% WC fill it back up and do another 40% and refill?

Would it become an 80% change? 60%? or still just a 40% change with extra unneeded work?
 
It would be something like a 60% change, and it would probably be best to do smallish water changes a few times per day, with a gap between them (of a few hours?) to minimize stress on the fish, but then they may be so used to the fresh water that the large water changes won't hurt. You should observe their behavior before, during and after a water change to see how they're taking it.

FWIW,

Liz
 
You will have replaced 40% of the old water with the first change, and then 40% of the 60% remaining from the first change with the second change.

0.4 + (0.4)(0.6) = 0.64 or 64%.

Maybe I didn't get enough sleep last weekend, but I still haven't figured out what GF is. How does the size of his girlfriend affect how many water he can change at once? It's all she can lift?
 
The only thing I hate about large water changes is the enourmous amount of nitrogen that get dissolved in tap water due to it being under pressure. When you do a large water change, the amount of dissolved gasses in your water increases and so does the amount in your fish. As the water degasses, the same happens in your fish's blood. You minimize this by doing small waterchanges more frequently.
 
i would hope so... girlfriends need more room than that.

:p:
 
rrkss said:
The only thing I hate about large water changes is the enourmous amount of nitrogen that get dissolved in tap water due to it being under pressure. When you do a large water change, the amount of dissolved gasses in your water increases and so does the amount in your fish. As the water degasses, the same happens in your fish's blood. You minimize this by doing small waterchanges more frequently.
Click to expand...

I don't understand this nitrogen issue. if you could please explain it.

Also, to minimize the "gas/degas" problem, aging you water for a few days can be useful.
 
Water under pressure dissolves more gases (air) than just under atmospheric pressure, ditto cold water holds more dissoled gases than warm water. So freshly drawn water will be supersaturated as it comes up to temperature under ambient pressure and small bubbles will form in the water and on surfaces. Gases in solution are basically individual gases, and as the largest component of air by a huge margin is nitrogen gas, that will be the major gas coming out of solution with warming and pressure release. But the oxygen, carbon dioxide, and all the other traces will be there as well, mixed in the same bubbles.

I do age my water prior to use, just one of my neuroses.
 
gravel cleanings

Lol GF does mean goldfish...If you guys looked at the My tank link in the signature you'd see that...you'd also see that my tap water comes from a well and has only 2.5 ppm Nitrates.. :sim:

Thanks for the advice..

My gravel cleaner was misplaced and I bought another today.I sucked out a good amount of brown so I'm hoping that it helps with the Trates and Trites..

Is there a rule of thumb to how often to clean gravel? since I'm doing daily water changes to drop the Trates level would it be wise to do daily gravel cleanings?
 
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