{"product_id":"crystalux-multifunctional-chlorine-tablets-20g","title":"CrystaLux Multifunctional Chlorine Tablets 20g Hot Tub \u0026 Small Pool 5kg","description":"\u003cp\u003e4 jobs in 1 tablet. Cleaner water, less faffing.\u003cbr\u003e\u003cbr\u003eCrystaLux Multifunctional Chlorine Tablets are slow-dissolving 20g pucks formulated for hot tubs and smaller pools. Each tablet sanitises, controls algae, clarifies water, softens the feel, and stabilises against UV loss. Drop into a floating dispenser or skimmer basket and let it work for days.\u003c\/p\u003e\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003e1. Test your water. Target free chlorine 3 to 5 ppm in spas, 1 to 3 ppm in pools, pH 7.2 to 7.6.\u003cbr\u003e2. Place tablets in a floating dispenser, skimmer basket, or in-line feeder. Never drop directly into the pool or spa.\u003cbr\u003e3. Start with 1 tablet per 1,000 litres of water in spas, 1 tablet per 2,000 litres in pools.\u003cbr\u003e4. Retest every 2 to 3 days and adjust dispenser opening to maintain target level.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eImportant Tablet Size Guidance\u003c\/h3\u003e\n\u003cp\u003eThese are \u003cstrong\u003esmall 20g multifunctional chlorine tablets\u003c\/strong\u003e, designed for \u003cstrong\u003ehot tubs, spas, inflatable pools, above-ground pools, and smaller swimming pools\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eEach \u003cstrong\u003e20g tablet is intended for smaller water volumes\u003c\/strong\u003e, offering easier and more controlled dosing than large 200g tablets.\u003c\/p\u003e\n\u003cp\u003eFor \u003cstrong\u003elarger swimming pools\u003c\/strong\u003e, especially pools above approx. \u003cstrong\u003e10,000 gallons \/ 45,000 litres\u003c\/strong\u003e, we recommend using \u003cstrong\u003e200g chlorine tablets\u003c\/strong\u003e instead, as they are longer-lasting and more practical for higher water volumes.\u003c\/p\u003e\n\u003cp\u003ePlease check your pool or spa water volume before ordering.\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003eWhy a 20g tablet instead of 200g?\u003cbr\u003e20g tablets dissolve over a few days and dose more accurately for smaller bodies of water like hot tubs and pools up to 20,000L. 200g tablets are designed for larger pools where one tablet can sanitise 50,000L for up to a week.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eCan I drop a tablet straight into my hot tub?\u003cbr\u003eNo. Always use a floating dispenser, skimmer, or in-line feeder. Direct contact with surfaces can bleach hot tub liners or pool finishes and create dangerously high local chlorine concentrations.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eWill these lower my pH?\u003cbr\u003eContinued use of TCCA-based tablets gradually drops pH because the active substance is mildly acidic in solution. We recommend stocking pH Increaser to keep your reading in the 7.2 to 7.6 target range.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eHow long does one tablet last?\u003cbr\u003eIn a 1,500L hot tub, a 20g tablet typically lasts 3 to 5 days depending on water temperature, bather load, and dispenser flow setting. In a small pool, expect 5 to 7 days.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eCan I mix 20g and 200g tablets?\u003cbr\u003eYes, but only in separate dispensers or feeders, never in the same one. The dissolve rate differs and mixing can cause uneven sanitisation.\u003c\/p\u003e","brand":"CrystaLux","offers":[{"title":"Default Title","offer_id":54035866419533,"sku":"CLX-MCT20-5KG","price":45.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/1669\/4605\/files\/CrystaLuxMultifunctional20gChlorineTablets.jpg?v=1785506105","url":"https:\/\/poolchemicalsstore.co.uk\/products\/crystalux-multifunctional-chlorine-tablets-20g","provider":"Pool Chemicals Store","version":"1.0","type":"link"}