{"title":"Green Pool Water","description":"","products":[{"product_id":"crystalux-pool-algaecide-5l","title":"CrystaLux Pool Algaecide","description":"\u003cp\u003eStop algae before it stops your weekend.\u003c\/p\u003e\n\u003cp\u003eCrystaLux Algaecide is a concentrated polymeric formula that helps control common pool and spa algae types: green, mustard, and the stubborn black variety. Use weekly as a preventative or as a curative when chlorine alone is not winning the battle. Non-staining, non-foaming, copper-based.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 class=\"label\"\u003eHow to Use\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eWeekly preventative: 100ml per 10,000L of pool water, added with pump running.\u003cbr\u003eCurative on outbreak: 250ml per 10,000L, brush walls and floor, run pump 24 hours, retest chlorine and adjust.\u003c\/p\u003e\n\u003cp\u003e1. Test water chemistry first. Aim for pH 7.2 to 7.6, free chlorine 1 to 3 ppm.\u003cbr\u003e2. Measure required dose. Pour slowly into the deepest end of the pool with pump running.\u003cbr\u003e3. Run filtration for 24 hours.\u003cbr\u003e4. For visible algae, also raise free chlorine to 5 to 10 ppm with shock granules.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003eMy pool is already green, what do I do?\u003cbr\u003eBrush walls and floor, shock with chlorine granules to lift free chlorine to 5 to 10 ppm, add the curative algaecide dose, run filtration for 24 hours, then backwash or clean filter and retest. Repeat if green tint remains.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eWill this stain my pool liner?\u003cbr\u003eNo. CrystaLux Algaecide is copper-free, the most common cause of liner staining. It is safe on vinyl, fibreglass, plaster and tile.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eWhy is my algaecide foaming?\u003cbr\u003eCheap algaecides foam because of poor surfactant chemistry. CrystaLux Algaecide is a non-foaming polymer formula. If you see foam, suspect contamination or another product in the water.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eHow often do I need to dose?\u003cbr\u003eWeekly preventative dosing during the swim season is the easy answer. Skip the shock-and-emergency cycle by staying ahead of it.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eIs this safe for hot tubs?\u003cbr\u003eIt is compatible with most spas. Always check your spa manufacturer's chemical list, dose at half the pool rate, and avoid use immediately before or after a draining cycle.\u003cbr\u003e\u003c\/p\u003e","brand":"CrystaLux","offers":[{"title":"Default Title","offer_id":54035864420685,"sku":"CLX-ALG-5L","price":22.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/1669\/4605\/files\/CrystaLuxPoolAlgaecide.jpg?v=1785506089"},{"product_id":"crystalux-ph-plus-5kg","title":"CrystaLux pH Plus Pool \u0026 Spa pH Increaser 5kg","description":"\u003cp\u003eRaise pool and spa pH the easy way. \u003cbr\u003e\u003cbr\u003eCrystaLux pH Increaser is sodium carbonate (soda ash) granules formulated to lift pool and spa pH back into the comfort zone of 7.2 to 7.6. Low pH is the silent destroyer of pool equipment, makes chlorine over-aggressive, and turns swims into eye-stingers. A small dose of pH Increaser, dispersed evenly, restores balance fast.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003e1. Test pH and total alkalinity. Target pH 7.2 to 7.6, total alkalinity 80 to 120 ppm.\u003cbr\u003e2. Pre-dissolve in a bucket of pool water before adding.\u003cbr\u003e3. Add slowly with the pump running, distributed around the perimeter.\u003cbr\u003e4. Wait 4 to 6 hours, retest, and dose again if needed.\u003c\/p\u003e\n\u003cp\u003eRoutine dose: 100g per 10,000L typically lifts pH by approximately 0.2 units. Always retest before adding more.\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003eHow do I know I need pH Increaser?\u003cbr\u003eTest your water with a quality test kit. If pH reads below 7.2 you need pH Increaser. Symptoms of low pH include stingy eyes, corroded metal fittings, etched plaster, and aggressive chlorine smell.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eHow long does it take to work?\u003cbr\u003epH typically stabilises 4 to 6 hours after dosing with the pump running. Always wait this long before retesting and adding more.\u003c\/p\u003e\n\u003cp\u003eCan I add too much?\u003cbr\u003eYes. Over-dosing pushes pH above 7.6, where chlorine becomes less effective and water can turn cloudy. Dose conservatively, retest, then add more if needed.\u003c\/p\u003e\n\u003cp\u003eIs this the same as alkalinity increaser? \u003c\/p\u003e\n\u003cp\u003eNo. pH Increaser (sodium carbonate) raises pH and slightly raises alkalinity. Alkalinity Increaser (sodium bicarbonate) raises alkalinity primarily with a smaller pH effect. Most UK owners only need pH Increaser unless alkalinity is specifically low.\u003c\/p\u003e\n\u003cp\u003eCan I use this in a hot tub?\u003cbr\u003eYes. Use the same target range (pH 7.2 to 7.6) and dose at approximately 10g per 1,000L of spa water as a starting point. Always retest before re-dosing.\u003cbr\u003e\u003c\/p\u003e","brand":"CrystaLux","offers":[{"title":"Default Title","offer_id":54035867959629,"sku":"CLX-PHI-5KG","price":14.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/1669\/4605\/files\/CrystaLuxpHPluspHIncreaser5kg.jpg?v=1785506092"},{"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\/green-pool-water-uk-pool-chemicals-store.png?v=1784223609","url":"https:\/\/poolchemicalsstore.co.uk\/collections\/green-pool-water.oembed","provider":"Pool Chemicals Store","version":"1.0","type":"link"}