water change

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loulouhathaway

Aquarium Advice Newbie
Joined
Apr 17, 2011
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ive got a 40 liter tank, how much water while i do a water change should i take out...................of the tank if it 40 liters
 
loulouhathaway said:
ive got a 40 liter tank, how much water while i do a water change should i take out...................of the tank if it 40 liters

Generally speaking, it's best to change 25-50% of your water (PWC) each week. How do you test your water parameters?
 
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