swifty Posted July 5, 2004 Share Posted July 5, 2004 Heya If my tanks 100 litres, and i change 25 litres in the morning and replace it, then at night do another 25litre water change, would it still be classified as a 50% water change or not? Swifty. Link to comment Share on other sites More sharing options...
Guest Gutty Posted July 5, 2004 Share Posted July 5, 2004 I think so. Technically it's not as the new water has had time to be poluted, but geez, they are so close together i'd class it as one water change. JMO Matt Link to comment Share on other sites More sharing options...
Chuckmeister Posted July 5, 2004 Share Posted July 5, 2004 If you've pulled 50% in a day, I'd call it a 50%change Its actually probably better to do it the way you have done as it is a little easier on the fish, having such a large water change. eg lower moves in the ph range, temp doesn't fluctuate as much etc. Link to comment Share on other sites More sharing options...
swifty Posted July 5, 2004 Author Share Posted July 5, 2004 more like the temperature, the taps temp is like 13.C and the tank is at 27.C Thanks for the help :D Link to comment Share on other sites More sharing options...
katanaone Posted July 5, 2004 Share Posted July 5, 2004 sounds like a mate of mine he does 25% each day for 2 days but i have more work to do than he does and every fourth waterchange (usually 25%) my tanks get a 50% waterchange and i add in cooler water Link to comment Share on other sites More sharing options...
nannat Posted July 7, 2004 Share Posted July 7, 2004 37.5 % mathematically Link to comment Share on other sites More sharing options...
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