{"product_id":"mav-aquadoc-total-alkalinity-increaser-for-hot-tubs-spas-2-lb-2-pack-fast-dissolving-sodium-bicarbonate","title":"MAV AquaDoc Total Alkalinity Increaser for Hot Tubs \u0026 Spas — 2 lb (2-Pack), Fast-Dissolving Sodium Bicarbonate","description":"\u003cp\u003e\u003cstrong\u003eMAV AquaDoc Total Alkalinity Increaser for Hot Tubs \u0026amp; Spas is a two-pack of fast-dissolving sodium bicarbonate granules formulated to raise and stabilize total alkalinity for more consistent spa water chemistry.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeeping a hot tub’s total alkalinity within the proper range prevents rapid pH swings and makes routine water care simpler. This 2 lb two-pack provides an easy-to-measure solution to lift low alkalinity, support pH buffering, and reduce the frequency of corrective dosing. Designed for use in spas and hot tubs, the granules dissolve quickly when added to circulating water, helping you restore balance without extended downtime.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I use this alkalinity increaser safely and effectively?\u003c\/h3\u003e\n\u003cp\u003eTest total alkalinity first, then add the product gradually to avoid overshooting the target range. Broadcast the recommended amount around the perimeter of the running spa, allow circulation for one to two hours, and retest before making further adjustments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeasure SPA volume and current alkalinity (target 80–140 ppm).\u003c\/li\u003e\n  \u003cli\u003eStart with the manufacturer’s dose, dissolve directly in circulating water if instructed.\u003c\/li\u003e\n  \u003cli\u003eCirculate for 1–2 hours, then retest and repeat as needed in small increments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat benefits will I notice after raising alkalinity?\u003c\/h3\u003e\n\u003cp\u003eRaising total alkalinity creates a buffering capacity that helps prevent sudden pH changes, reducing the need for frequent corrections. Water feels more comfortable, and sanitizer performance becomes more stable when pH remains steady.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLess pH bounce and fewer corrective adjustments.\u003c\/li\u003e\n  \u003cli\u003eSmoother-feeling water and clearer chemical balance.\u003c\/li\u003e\n  \u003cli\u003eImproved predictability of sanitizer behavior and maintenance chores.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this product compatible with my hot tub chemicals and surfaces?\u003c\/h3\u003e\n\u003cp\u003eThe active ingredient, sodium bicarbonate, is a common, spa-safe alkalinity increaser compatible with most sanitizers and hot tub materials when used as directed. Avoid combining with acids directly; always add this product separately and allow circulation before treating with other chemicals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks alongside chlorine or bromine sanitizers when dosed correctly.\u003c\/li\u003e\n  \u003cli\u003eSafe for acrylic, fiberglass, and common hot tub finishes with proper dosing.\u003c\/li\u003e\n  \u003cli\u003eDo not mix with acids or undissolved chemicals in tight spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow quickly will I see results after adding the granules?\u003c\/h3\u003e\n\u003cp\u003eBecause the granules are formulated to dissolve rapidly, measurable changes in total alkalinity are typically visible after one to two hours of circulation. Always retest before adjusting further to avoid overshooting the recommended alkalinity range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFast-dissolving formula reduces wait time before retesting.\u003c\/li\u003e\n  \u003cli\u003eMost users see stabilized readings after a single dosing and circulation period.\u003c\/li\u003e\n  \u003cli\u003eIf levels remain low, repeat add-and-test cycles in small increments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: MAV AquaDoc Total Alkalinity Increaser is intended for hot tub and spa owners who want a straightforward, U.S.-made product to correct low alkalinity and improve overall water stability. It's a practical choice for homeowners, property managers, and light-maintenance professionals seeking predictable, fast-acting alkalinity adjustments without complicated application steps.\u003c\/p\u003e\n\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 much should I add to raise alkalinity?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Dose based on spa volume and current alkalinity; add small increments, circulate 1–2 hours, then retest to reach 80–140 ppm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this with chlorine or bromine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—sodium bicarbonate is compatible with common sanitizers when added separately and after proper circulation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MAV AquaDoc","offers":[{"title":"Default Title","offer_id":56823701209428,"sku":"B0G2CD5D6K","price":85.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/mav-aquadoc-front-packaging_db07ef7e-d1d3-4509-b540-a8cb605b923f.jpg?v=1786977847","url":"https:\/\/gardenluxe.co.uk\/products\/mav-aquadoc-total-alkalinity-increaser-for-hot-tubs-spas-2-lb-2-pack-fast-dissolving-sodium-bicarbonate","provider":"Gardenluxe Uk","version":"1.0","type":"link"}