{"product_id":"blue-pet-blh-403-aquarium-hang-on-filter-8-watts","title":"Blue Pet BLH-403 Aquarium Hang on Filter 8 watts","description":"\u003cp\u003e\u003cstrong\u003eThe Blue Pet BLH-403 is an 8W hang-on-back (HOB) aquarium filter delivering up to 500 L\/H, with a built-in surface skimmer that clears the oily film off the water as well as filtering debris — keeping small-to-medium tanks clean, clear and well-oxygenated.\u003c\/strong\u003e It hangs on the rim to save space, creates an oxygenating waterfall return, and uses a 2-layer filter system for fast, effective filtration. A strong, feature-rich HOB for everyday tanks.\u003c\/p\u003e\n\u003ch3\u003eWhy choose the Blue Pet BLH-403?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e500 L\/H flow\u003c\/strong\u003e from an 8W motor for small-to-medium tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in surface skimmer\u003c\/strong\u003e removes the oily film from the water surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterfall return\u003c\/strong\u003e for strong surface oxygenation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-layer filtration\u003c\/strong\u003e — mechanical and biological.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHangs on the rim\u003c\/strong\u003e — no space used inside the tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBlue Pet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eBLH-403\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e8 watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax flow\u003c\/td\u003e\n\u003ctd\u003e500 L\/H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtra\u003c\/td\u003e\n\u003ctd\u003eBuilt-in surface skimmer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHang-on-back (HOB) filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhich tanks is it best for?\u003c\/h3\u003e\n\u003cp\u003eWith 500 L\/H, the BLH-403 suits small-to-medium tanks up to roughly 120L, and the surface skimmer makes it especially good for tanks with an oily surface film. For smaller tanks see the \u003ca href=\"\/products\/blue-pet-blh-401-aquarium-hang-on-filter-4-watts\"\u003eBLH-401 (250 L\/H)\u003c\/a\u003e; for a skimmer model with lower flow, the \u003ca href=\"\/products\/bluepet-blh-302-aquarium-hang-on-filter-5w-300l-h-with-surface-skimmer\"\u003eBLH-302 (300 L\/H)\u003c\/a\u003e. See \u003ca href=\"\/blogs\/news\/canister-vs-hob-vs-sponge\"\u003ecanister vs HOB vs sponge\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow to set it up\u003c\/h3\u003e\n\u003cp\u003eHang the filter on the back rim, prime it if needed, and plug in. Keep it \u003cstrong\u003erunning 24\/7\u003c\/strong\u003e, and rinse the filter layers in old tank water (never tap water) when flow slows. See \u003ca href=\"\/blogs\/news\/how-to-install-aquarium-filter\"\u003ehow to install an aquarium filter\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003ch4\u003eWhat size tank is the BLH-403 for?\u003c\/h4\u003e\n\u003cp\u003eSmall-to-medium tanks up to roughly 120L, based on its 500 L\/H flow.\u003c\/p\u003e\n\u003ch4\u003eWhat does the surface skimmer do?\u003c\/h4\u003e\n\u003cp\u003eIt draws in the oily film that collects on the water surface, improving gas exchange and clarity.\u003c\/p\u003e\n\u003ch4\u003eDoes it oxygenate the water?\u003c\/h4\u003e\n\u003cp\u003eYes. The waterfall return plus skimmer give strong surface oxygenation.\u003c\/p\u003e\n\u003ch4\u003eHow do I maintain it?\u003c\/h4\u003e\n\u003cp\u003eRinse the filter layers in old tank water when flow drops, usually every 2–4 weeks.\u003c\/p\u003e\n\u003ch4\u003eShould it run all the time?\u003c\/h4\u003e\n\u003cp\u003eYes, keep it running 24\/7 to protect the beneficial bacteria.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNew to filtration? Read our \u003ca href=\"\/blogs\/news\/aquarium-filter-guide\"\u003ecomplete aquarium filter guide\u003c\/a\u003e and \u003ca href=\"\/blogs\/news\/how-aquarium-filters-work\"\u003ehow aquarium filters work\u003c\/a\u003e.\u003c\/em\u003e\u003c\/p\u003e","brand":"Onyxaqua","offers":[{"title":"Default Title","offer_id":44484169498666,"sku":null,"price":870.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/9238\/5322\/files\/Blue-Pet-BLH-403-Aquarium-Hang-on-Filter-1.webp?v=1781953359","url":"https:\/\/fishbazaarr.in\/products\/blue-pet-blh-403-aquarium-hang-on-filter-8-watts","provider":"Fish Bazaar","version":"1.0","type":"link"}