{"product_id":"hweiua-55w-uv-replacement-bulbs-2-pack-2g11-4-pin-for-koi-pond-aquarium-8-000h-life-quartz-tube","title":"HWEIUA 55W UV Replacement Bulbs 2-Pack 2G11 4-Pin for Koi Pond \u0026 Aquarium – 8,000h Life, Quartz Tube","description":"\u003cp\u003e\u003cstrong\u003eHWEIUA’s 2-pack of 55-watt 2G11 UV replacement bulbs clears green or cloudy pond and aquarium water by targeting free-floating algae and microbes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your koi pond, garden water feature, or aquarium has turned green or hazy, a properly sized UV lamp can accelerate water clarification without changing equipment. These HWEIUA bulbs are designed as direct replacements for many 55W clarifiers and sterilizers and use a high-transmission quartz tube with a 2G11 four-pin base for reliable electrical fit and consistent ultraviolet output.\u003c\/p\u003e\n\n\u003ch3\u003eWhich systems will these 55W UV bulbs fit?\u003c\/h3\u003e\n\u003cp\u003eThese 2G11 four-pin bulbs are manufactured to match the mounting and electrical requirements of common 55-watt clarifier units. They are compatible with popular pond and aquarium sterilizers and work as straightforward replacements when the original lamp has worn out.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Oase Bitron 55\/110 series\u003c\/li\u003e\n  \u003cli\u003eCompatible with Aqua Medic Helix Max 55\u003c\/li\u003e\n  \u003cli\u003eWorks in Jebao \/ Jebo PU-55 and CW-55 models\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for SUNSUN 55W and Jebao PU55 family units\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long do these UV bulbs last and when should I replace them?\u003c\/h3\u003e\n\u003cp\u003eThe HWEIUA bulbs are built with an 8,000-hour expected service life under normal operating conditions. Over time UV output declines even while the lamp still lights, so swapping bulbs on a schedule keeps sterilization and clarification performance consistent.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated life: approximately 8,000 hours\u003c\/li\u003e\n  \u003cli\u003eRecommended replacement interval: every 8–10 months depending on daily run-time\u003c\/li\u003e\n  \u003cli\u003eReplace sooner if water clarity returns to green or biological load increases\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat safety and performance notes should I follow?\u003c\/h3\u003e\n\u003cp\u003eThese lamps emit short-wave ultraviolet radiation peaking near 253.7 nm, which is effective at reducing free-floating algae and microorganisms but can harm skin and eyes with direct exposure. Always power down and follow the clarifier manufacturer’s safety instructions when handling or changing the bulb.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNever look directly at an operating UV lamp\u003c\/li\u003e\n  \u003cli\u003eWear gloves and eye protection when replacing bulbs\u003c\/li\u003e\n  \u003cli\u003eEnsure lamp housing and seals are intact to prevent UV leakage into the environment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill installing these bulbs make a visible difference fast?\u003c\/h3\u003e\n\u003cp\u003eMany owners see progressive improvements in water clarity within days to a few weeks depending on pond size, circulation, and the current algae load. UV lamps reduce suspended algae and microbes, helping filters work more efficiently and making subsequent maintenance easier.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNoticeable clearing often appears within several days to weeks\u003c\/li\u003e\n  \u003cli\u003eBest results when used with mechanical and biological filtration\u003c\/li\u003e\n  \u003cli\u003eNot a substitute for routine pond maintenance or biological balance adjustments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This 2-pack is aimed at pond and aquarium owners who need an affordable, compatible UV lamp replacement for 55W clarifier units. It suits hobbyists and professional maintainers using Oase, Aqua Medic, Jebao\/Jebo, SUNSUN, and similar 55-watt systems who want dependable lamp life, clear water, and straightforward swap-in compatibility.\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: Can I use one bulb from the pack and store the other?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Store the unused bulb in its original packaging in a cool, dry place to avoid damage until needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the bulb kill all algae immediately?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. UV reduces free-floating algae over days to weeks; mechanical filtration and pond care also help achieve clear water.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HWEIUA","offers":[{"title":"Default Title","offer_id":56832331383124,"sku":"B0FWCMB7YT","price":50.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/hweiua-55w-2g11-front-view.jpg?v=1787027268","url":"https:\/\/gardenluxe.co.uk\/products\/hweiua-55w-uv-replacement-bulbs-2-pack-2g11-4-pin-for-koi-pond-aquarium-8-000h-life-quartz-tube","provider":"Gardenluxe Uk","version":"1.0","type":"link"}