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This is one of those questions that comes up all the time on all the plant forums, mail lists and discussions.
The water from the faucet is under pressure and contains a higher concentration of dissolved gasses. What you see is the out gassing of the water. This is the same reason it is recommended to leave tap water out overnight before testing pH.
The water from the faucet is under pressure and contains a higher concentration of dissolved gasses. What you see is the out gassing of the water. This is the same reason it is recommended to leave tap water out overnight before testing pH.
