{"product_id":"robelle-alkalinity-up-for-pools-20-lb-sodium-bicarbonate-fast-dissolving-for-stable-ph-low-cloudiness","title":"Robelle Alkalinity Up for Pools 20 lb — Sodium Bicarbonate, Fast-Dissolving for Stable pH \u0026 Low Cloudiness","description":"\u003cp\u003e\u003cstrong\u003eRobelle 20-Pounds Premium Alkalinity Up is a fast-dissolving sodium bicarbonate formula designed to raise and stabilize total alkalinity in swimming pools.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeeping total alkalinity within the proper range prevents rapid pH swings and helps your sanitizer work more predictably. Robelle Alkalinity Up is concentrated for pool use, easy to apply while the pump runs, and dissolves quickly to minimize cloudiness. Use a reliable test kit to confirm current alkalinity and follow the product dosing guidance for safe, effective adjustment based on pool volume and surface type.\u003c\/p\u003e\n\n\u003ch3\u003eHow much alkalinity does this product add to my pool?\u003c\/h3\u003e\n\n\u003cp\u003eRobelle Alkalinity Up uses sodium bicarbonate to increase total alkalinity predictably. According to the formulation, 11 ounces will raise alkalinity approximately 10 ppm in a 5,000 gallon pool, so you can scale doses by pool volume to reach target ranges.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e11 oz ≈ +10 ppm per 5,000 gallons\u003c\/li\u003e\n  \u003cli\u003eMeasure pool gallons first for accurate dosing\u003c\/li\u003e\n  \u003cli\u003eAdd product with pump running for even distribution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the ideal alkalinity ranges for different pool surfaces?\u003c\/h3\u003e\n\n\u003cp\u003eDifferent pool finishes need different alkalinity levels to protect surfaces and equipment. Keep fiberglass pools a bit lower and vinyl-lined pools at the higher end; plaster, tile, and painted finishes sit in the middle to avoid etching, scale, or liner stress.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFiberglass pools: aim for 70–100 ppm\u003c\/li\u003e\n  \u003cli\u003ePlaster, tile, painted, exposed aggregate: 80–120 ppm\u003c\/li\u003e\n  \u003cli\u003eVinyl-lined pools: 120–140 ppm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I apply Robelle Alkalinity Up safely and effectively?\u003c\/h3\u003e\n\n\u003cp\u003eTest total alkalinity first, then calculate the dose based on pool volume and desired ppm increase. Broadcast the granules around the deep end or pour dissolved solution into the deep area while the pump is circulating; avoid adding product directly to skimmer openings or near return jets alone.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRun the circulation pump during and after application\u003c\/li\u003e\n  \u003cli\u003eFor large adjustments, add in stages and retest after circulation\u003c\/li\u003e\n  \u003cli\u003eStore product in a cool, dry place away from moisture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill raising alkalinity affect my pool’s pH and equipment?\u003c\/h3\u003e\n\n\u003cp\u003eRaising total alkalinity stabilizes pH, reducing pH bounce and enabling sanitizers to remain effective. Proper alkalinity also reduces the risk of scale forming on surfaces and minimizes corrosive conditions that can damage metal fittings and equipment.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSupports pH stability for easier maintenance\u003c\/li\u003e\n  \u003cli\u003eHelps prevent scaling and metal corrosion\u003c\/li\u003e\n  \u003cli\u003eReduces risk of surface etching with balanced chemistry\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this product for: Robelle 20-Pounds Premium Alkalinity Up is intended for pool owners and maintenance professionals who need a reliable, easy-to-use alkalinity increaser. It’s suitable for all common pool surfaces—fiberglass, vinyl, plaster, tile, painted finishes—and for pools of varying sizes, provided proper dosing is followed. Use it when tests show alkalinity is below recommended ranges, and incorporate regular testing into your routine to keep water chemistry balanced and equipment protected.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long until alkalinity levels stabilize after adding?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Allow at least 4–6 hours of circulation, then retest; larger adjustments may need 24 hours.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I add this directly to the skimmer?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Broadcast around the deep area or dissolve first; avoid pouring undiluted granules into the skimmer.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Robelle","offers":[{"title":"Default Title","offer_id":56798894457172,"sku":"B06VY3TFHG","price":117.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/robelle-front-20lb-bag.jpg?v=1786727673","url":"https:\/\/gardenluxe.co.uk\/products\/robelle-alkalinity-up-for-pools-20-lb-sodium-bicarbonate-fast-dissolving-for-stable-ph-low-cloudiness","provider":"Gardenluxe Uk","version":"1.0","type":"link"}