{"product_id":"luma-premium-hardness-plus-5kg-swimming-pool-spa-water-balance","title":"Luma Premium Hardness Plus 5kg | Swimming Pool \u0026 Spa Water Balance","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eMaintain balanced water with Luma Premium Hardness Plus. Designed for swimming pools, hot tubs and spas, this calcium hardness increaser helps bring water chemistry into balance, reducing the risk of damage caused by soft water while helping protect pool surfaces, heaters and equipment.\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eBalanced water chemistry is essential for protecting your pool or spa and ensuring a comfortable swimming experience. When calcium hardness levels are too low, water can become aggressive, potentially affecting grout, finishes, heaters and metal components over time.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eLuma Premium Hardness Plus has been carefully selected for pool owners and professionals who want reliable water balance and long-term protection for their investment.\u003c\/p\u003e\n\u003cp\u003eThis premium granular formula safely increases calcium hardness levels, helping to bring water into the recommended operating range. When used following accurate water testing, it supports a stable water care routine, helps reduce the effects of corrosive water conditions and protects important pool and spa components. Suitable for swimming pools, spas and hot tubs, the 5kg pack is ideal for both routine maintenance and corrective adjustments.\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRaises calcium hardness levels\u003c\/li\u003e\n\u003cli\u003eHelps prevent aggressive water conditions\u003c\/li\u003e\n\u003cli\u003eSupports protection of pool finishes and equipment\u003c\/li\u003e\n\u003cli\u003ePromotes balanced water chemistry\u003c\/li\u003e\n\u003cli\u003eSuitable for swimming pools, spas and hot tubs\u003c\/li\u003e\n\u003cli\u003eIdeal for routine maintenance and corrective treatment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan lang=\"EN-US\"\u003eHow to Use\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eMeasure calcium hardness before treatment. Add only as stated on the product label, allow full circulation and retest before making further adjustments.\u003c\/span\u003e\u003c\/p\u003e","brand":"Luma Pools LTD","offers":[{"title":"Default Title","offer_id":54504569569626,"sku":null,"price":25.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/8423\/8426\/files\/LUMA-HARDNESS-PLUS_2.jpg?v=1785940616","url":"https:\/\/lumapools.co.uk\/products\/luma-premium-hardness-plus-5kg-swimming-pool-spa-water-balance","provider":"Luma Pools LTD","version":"1.0","type":"link"}