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The ideal spa calcium hardness levels are between 100 - 200mg/l(ppm), promoting 'balanced' water and protection of spa plant equipment. Test the calcium hardness level of the spa water and if it is below 100mg/l (ppm) use Aquasparkle Spa Hardness Plus to increase the level.
*Can you confirm whether you live in Wales?
We are only able to supply Hot Tubs, Endless Pools & Swim Spas in Wales.*