{"product_id":"hygger-18w-aquarium-uv-internal-filter-for-20-75-gallon-tanks-300-gph-with-timer","title":"hygger 18W Aquarium UV Internal Filter for 75.7–284 L Tanks, 300 GPH with Timer","description":"\u003cp\u003e\u003cstrong\u003eThe hygger 18W Aquarium UV Internal Filter combines filtration, oxygenation, green-water treatment and circulation for aquariums, with a maximum flow of 300 GPH.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFour functions in one filter — filters water, adds oxygen, helps clear green water and circulates aquarium water.\u003c\/li\u003e\n\u003cli\u003eDesigned for 20–75 gallon tanks — gives aquarium owners a filter suited to this stated tank-capacity range.\u003c\/li\u003e\n\u003cli\u003eSponge filtration and a UV lamp — the sponge catches residue and impurities while UV light helps clear green water.\u003c\/li\u003e\n\u003cli\u003eSeparate pump and UV controls with timer choices — run filtration without the UV light or select a lamp schedule.\u003c\/li\u003e\n\u003cli\u003eTwo water outlets and two output styles — choose aeration or a rainfall-style spray-bar flow.\u003c\/li\u003e\n\u003cli\u003eIncludes the filter, pump, UV light controller and installation accessories — supplies the listed components for setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCloudy or green aquarium water can make it harder to enjoy a clear view of the tank. This internal filter brings several water-treatment functions together, with options for everyday circulation and oxygenation as well as a UV-light schedule for green-water conditions. It is made for freshwater and saltwater aquariums.\u003c\/p\u003e\n\u003ch3\u003eWhat does this aquarium filter do for tank water?\u003c\/h3\u003e\n\u003cp\u003eThe hygger filter combines mechanical sponge filtration with a UV lamp and water movement to address several aquarium needs in one unit. Water passes through the sponge, which filters out residues and other impurities; the UV light is intended to help clear green water and maintain clear, transparent-looking water. The plastic shell and sponge are designed to limit UV light leakage around the lamp.\u003c\/p\u003e\n\u003cp\u003eFor cloudy or green water, clearing time can range from 3–8 days depending on tank size and water quality. During a heavy green-water problem, the recommended use is 24 hours a day for 3–5 consecutive days; for daily maintenance, the recommended UV operating time is 4 hours.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e18W power supports the filter’s combined functions.\u003c\/li\u003e\n\u003cli\u003eMaximum water flow is 300 GPH.\u003c\/li\u003e\n\u003cli\u003eAn observation window lets you check whether the UV light is working.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow can I choose the water flow and oxygenation mode?\u003c\/h3\u003e\n\u003cp\u003eThe two outlets offer an aerating mode and a rainfall mode. In aerating mode, an air venturi and adjustable tubing add oxygen to the water. In rainfall mode, a spray bar spreads filtered water across the surface, creating gentle surface agitation and supporting circulation.\u003c\/p\u003e\n\u003cp\u003eThese options let you choose how the returning water moves through the aquarium. The aerating setup uses the air hose, while the rainfall setup uses the included shower pipe. Both modes support water movement; the aerating mode also uses the venturi to boost oxygen levels.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse the adjustable tubing to set the aerating arrangement.\u003c\/li\u003e\n\u003cli\u003eUse the spray bar for evenly dispersed rainfall-style flow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCan I control the UV lamp separately?\u003c\/h3\u003e\n\u003cp\u003eYes. The water pump and UV light have independent switches, so the pump can filter and circulate water while the UV lamp is switched off. The timer controller offers 4-, 8-, 12- and 24-hour lamp settings, allowing you to select a daily operating period.\u003c\/p\u003e\n\u003cp\u003eThis separate control is useful when you want filtration without UV operation. The timer choices also accommodate the recommended 4-hour daily maintenance period and the longer operating schedule suggested for heavy green-water conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSwitch the UV light independently from the pump.\u003c\/li\u003e\n\u003cli\u003eSelect from four timer settings: 4, 8, 12 or 24 hours.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat is included, and which aquariums is it made for?\u003c\/h3\u003e\n\u003cp\u003eThe hygger aquarium filter is intended for 20–75 gallon aquariums and can be used in freshwater or saltwater setups. The package includes one filter with sponge, one pump with power cord, one UV light with timer controller, four suction cups with base, one rain shower pipe and one air hose.\u003c\/p\u003e\n\u003cp\u003eThe components provide the filter, its pump and UV control, plus the listed mounting and water-output accessories. Choose this model for a tank within its stated capacity range when you want sponge filtration, selectable UV operation, oxygenation and circulating water in one internal filter.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFour suction cups with base are included for mounting.\u003c\/li\u003e\n\u003cli\u003eThe air hose and rain shower pipe support the two outlet arrangements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis filter best suits freshwater or saltwater aquarium keepers with a 20–75 gallon tank who want filtration, water movement, oxygenation and a separately controlled UV lamp in one unit. Its defined tank range and selectable aerating or rainfall output make it a fit for aquariums needing these combined functions.\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: What size aquarium is the hygger 18W UV Internal Filter suitable for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The hygger 18W UV Internal Filter is designed for aquariums from 20 to 75 gallons and is suitable for freshwater and saltwater tanks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the hygger Aquarium UV Internal Filter run without its UV lamp?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The hygger Aquarium UV Internal Filter has separate pump and UV-light switches, so you can run filtration with the lamp off.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"hygger","offers":[{"title":"Default Title","offer_id":55680311066967,"sku":"B0G7YS579P","price":67.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/4780\/0663\/files\/hygger-uv-internal-filter-front-view.jpg?v=1793429533","url":"https:\/\/bathpetsupplies.co.uk\/products\/hygger-18w-aquarium-uv-internal-filter-for-20-75-gallon-tanks-300-gph-with-timer","provider":"BathPetSupplies","version":"1.0","type":"link"}