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About RobUK

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  1. Thanks for the reply, reassures me that I wasn’t doing something wrong.
  2. Hi I’m new to owning a hot tub and have recently Drained and refilled my hot tub and managed to balance the water using Nitros approach but by the time I have got the pH under 7.8 and stable the TA had dropped to 35ppm. 35ppm seemed low even though using a online calculator the water was balanced with a score of around 0.09. The Calcium (hardness) is at 251ppm. I tried to raise the TA to around 80 yesterday by adding 70g of Sodium Bicarbonate after dissolving it in water from the hot tub and adding it slowly. The TA went up to 76ppm. That was now 16 hours ago and rete
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