- HTH pH Plus Powder / pH Increaser For Swimming Pools - Rebranded From Fi Clor pH Increaser For 2022 - Fast Dissolving Soda Ash - For Use In Pools Or Hot Tub Spas - Powder Formula So No Residue - PRODUCT INFO - DELIVERY - RETURNS DELIVERY: HTH pH Plus Powder is sent out on a next working day service but all standard deliveries will be within 5 working days RETURNS: HTH pH Plus Powder can be returned unused in original packaging, suitable for resale, within 14 days from date of delivery. PRODUCT INFO: HTH pH Plus Powder will quickly raise the pH levels in your swimming pool or hot tub spa. Having the correct pH levels in your pool and spa water is important as low pH levels can cause eye and skin .
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