{"title":"High pH","description":"","products":[{"product_id":"crystalux-stabilised-chlorine-granules-5kg","title":"CrystaLux Stabilised Chlorine Granules 5kg","description":"\u003cp\u003e\u003cstrong\u003eCrystaLux Stabilised Chlorine Granules 5 kg\u003c\/strong\u003e are designed for regular pool and hot tub water care, helping you maintain cleaner, clearer and better-managed water as part of a proper testing and treatment routine.\u003c\/p\u003e\n\u003cp\u003eThese stabilised chlorine granules are a practical choice for customers who want a straightforward way to support everyday sanitising. Use them as directed on the product label after testing your water, especially when maintaining chlorine levels during regular use.\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"CrystaLux","offers":[{"title":"Default Title","offer_id":53856165921101,"sku":"CLX-SCG-5KG","price":24.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/1669\/4605\/files\/StabilisedChlorineGranules5kg.jpg?v=1785506078"},{"product_id":"crystalux-ph-minus-7kg","title":"CrystaLux pH Minus 7kg Pool \u0026 Spa pH Reducer","description":"\u003cp\u003ePull pH back into the safe zone, fast.\u003cbr\u003e\u003cbr\u003eCrystaLux pH Reducer is dry-acid sodium bisulphate granules that bring pool and spa pH back down into the 7.2 to 7.6 target range. High pH causes cloudy water, scale on tiles and fittings, and a sluggish chlorine. A measured dose, properly distributed, fixes it within hours.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e1. Test pH and total alkalinity before dosing. Target pH is 7.2 to 7.6. Typical total alkalinity target is 80 to 120 ppm. 2. Pre-dissolve granules in a clean bucket of pool water. 3. Add slowly with the pump running, distributed around the perimeter for general pH correction. 4. Wait 4 to 6 hours, retest, and dose again only if needed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRoutine pH correction: dose gradually according to your test result and pool volume. High total alkalinity correction: use smaller repeated doses, retest between applications, and avoid driving pH too low. Aeration can help raise pH again without adding alkalinity. Always retest before re-dosing. Do not add large doses in one hit.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003eWhy is my pH always high?\u003cbr\u003eHigh pH commonly comes from new plaster pools curing, hard fill water, frequent splash-out and top-ups, or aerators and water features off-gassing CO2. The fix is regular pH Reducer dosing, ideally with weekly testing.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eHow is this different from muriatic acid?\u003cbr\u003eSodium bisulphate is dry granular acid, easier and safer to store and dose than liquid muriatic (hydrochloric) acid. It is the standard for residential pool care in the UK.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eCan I use this with my salt chlorinator?\u003cbr\u003eYes. Salt pools tend to drift to higher pH because the cell off-gases CO2; pH Reducer is a frequent need for salt chlorinator owners.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eWill it lower alkalinity too?\u003cbr\u003eYes, it lowers both pH and alkalinity. If alkalinity is in range and only pH is high, dose conservatively to avoid pulling alkalinity below 80 ppm.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eHow long will 7kg last?\u003cbr\u003eFor a typical 50,000L UK pool with seasonal use, a 7 kg pack covers approximately one full season of routine pH corrections.\u003c\/p\u003e","brand":"CrystaLux","offers":[{"title":"Default Title","offer_id":54035868057933,"sku":"CLX-PHR-7KG","price":19.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/1669\/4605\/files\/pHMinus7kg.jpg?v=1785506092"},{"product_id":"crystalux-shock-granules-5kg","title":"CrystaLux Shock Granules 5kg Rapid Pool \u0026 Hot Tub Chlorine Boost","description":"\u003cp\u003eRapid chlorine boost for cloudy, tired or heavily used water.\u003cbr\u003e\u003cbr\u003eCrystaLux Shock Granules are a fast-acting chlorine shock treatment for pools and hot tubs. Use after heavy bathing, storms, hot weather, low chlorine readings or early signs of cloudy or green water. The granules rapidly raise free chlorine, oxidise organic contaminants and help restore water clarity when used as directed.\u003c\/p\u003e\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003e1. Test your water first. Aim for pH 7.2 to 7.6 before shocking.\u003cbr\u003e2. Pre-dissolve granules in a clean bucket of pool water. Always add granules to water, never water to granules.\u003cbr\u003e3. Add slowly around the pool or spa with circulation running.\u003cbr\u003e4. Run filtration for at least 4 to 8 hours, or overnight for cloudy water.\u003cbr\u003e5. Retest before bathing. Do not use the water until free chlorine has returned to the safe range stated on the product label.\u003c\/p\u003e\n\u003cp\u003eGuide dose: 150g per 10,000 litres for a standard shock treatment. For hot tubs, dose only to the level shown on your label and test strips, because small water volumes can overshoot quickly.\u003c\/p\u003e\n\u003cp\u003eProduct FAQ \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eWhen should I use shock granules?\u003cbr\u003eUse shock granules when chlorine has dropped too low, after heavy bathing, after hot weather or rain, when water starts turning cloudy, or when you need a stronger clean-up dose before returning to routine chlorine care.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eCan I use shock granules in a hot tub?\u003cbr\u003eYes, if your hot tub manufacturer allows chlorine shock products. Hot tubs are small water volumes, so dose carefully, circulate well, and always test before bathing. Do not use the water until chlorine has returned to the safe range on your test kit and product label.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eIs this the same as Stabilised Chlorine Granules?\u003cbr\u003eNo. Stabilised Chlorine Granules are for routine sanitising and outdoor chlorine protection. Shock Granules are for rapid chlorine boosting and oxidising contaminants when water needs a stronger reset. Do not mix the two products together in dry form or in the same dosing container.\u003c\/p\u003e\n\u003cp\u003eCan I swim straight after shocking?\u003cbr\u003eNo. Run filtration, allow the treatment to circulate, then retest. Only use the pool or hot tub when free chlorine has returned to the safe range stated on your product label and test kit.\u003c\/p\u003e\n\u003cp\u003eWill shock granules fix a green pool on their own?\u003cbr\u003eShock granules are a key part of green pool recovery, but they work best with brushing, filtration, correct pH, and algaecide where needed. For visible algae, brush surfaces first, shock the water, run filtration, then clean or backwash the filter.\u003c\/p\u003e","brand":"CrystaLux","offers":[{"title":"Default Title","offer_id":54035869827405,"sku":"CLX-SHOCK-5KG","price":27.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/1669\/4605\/files\/CrystaLuxShockGranules5kg.jpg?v=1785506090"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/1669\/4605\/collections\/high_ph_2a104432-5c8c-438a-bcba-75beeb641816.png?v=1785506074","url":"https:\/\/poolchemicalsstore.co.uk\/collections\/high-ph.oembed","provider":"Pool Chemicals Store","version":"1.0","type":"link"}