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Originally Posted by gazz2005uk ok then, and if it is a big difference what should i do? |
If the ph difference between what's in the tank and what's coming out of your tap is large, then you want to do small water changes with several hours between them until it gets balanced out.
By doing small water changes (maybe 5% max in the beginning) the "average" ph will change slowly. As the ph gets closer to the ph comming out of the tap, you can start doing larger water changes, since the spread will not be as large and it will take more water to affect the "average".