{"product_id":"sobo-slim-filter-wp-408h-hang-on-filter","title":"Sobo WP-408H Slim Hang-On Aquarium Filter | up to 100L (2–3 ft) | Fish Bazaar","description":"\u003cp\u003eThe \u003cstrong\u003eSobo WP-408H slim hang-on aquarium filter\u003c\/strong\u003e is a compact, affordable hang-on-back (HOB) filter for small fish tanks up to roughly \u003cstrong\u003e100 litres (around 2 to 3 feet)\u003c\/strong\u003e, with a slim profile that takes up almost no space behind the tank. It hangs on the rim, cascades filtered water back in, and provides simple, effective 3-stage filtration — making it one of the best-value small aquarium filters available in India for nano and community tanks.\u003c\/p\u003e\n\n\u003ch2\u003eWhat is the Sobo WP-408H Filter?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eShort answer:\u003c\/strong\u003e A slim, budget hang-on-back (HOB) aquarium filter for small tanks up to about 100 litres.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIn detail:\u003c\/strong\u003e The WP-408H clips onto the back rim of the tank with a slim body that barely protrudes, lifts water through a filter cartridge, and trickles it back over the surface. It is easy to install, easy to clean, and delivers approximately 680 litres per hour (check the listing for the exact rating). \u003cstrong\u003eFor example:\u003c\/strong\u003e on a 2–3 foot community or nano tank, the WP-408H keeps the water clear and the surface moving without the cost or bulk of a canister.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlim hang-on design\u003c\/strong\u003e — takes up minimal space behind the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~680 LPH flow\u003c\/strong\u003e — good circulation for small tanks (verify on the listing).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-stage filtration\u003c\/strong\u003e — mechanical, biological and chemical in the cartridge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface agitation\u003c\/strong\u003e — the return flow aerates the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy maintenance\u003c\/strong\u003e — quick cartridge access for cleaning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent value\u003c\/strong\u003e — effective HOB filtration at a low price.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBenefits\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eImmediate:\u003c\/strong\u003e Clear water and gentle surface circulation from day one, with simple hang-on installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShort-term:\u003c\/strong\u003e The filter media matures into a biological filter, keeping ammonia and nitrite at zero.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLong-term:\u003c\/strong\u003e Dependable, low-cost filtration for small tanks, with cheap and easy media changes.\u003c\/p\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe pump lifts water through the cartridge — \u003cstrong\u003emechanical\u003c\/strong\u003e media traps debris, \u003cstrong\u003ebiological\u003c\/strong\u003e media grows the bacteria that convert toxic ammonia to nitrite and nitrate, and \u003cstrong\u003echemical\u003c\/strong\u003e media (carbon) polishes the water — then returns it over the surface. See \u003ca href=\"\/blogs\/news\/how-aquarium-filters-work\"\u003ehow aquarium filters work\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eWhich Tank Size Is the WP-408H For?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eShort answer:\u003c\/strong\u003e Small tanks up to about 100 litres — roughly 2 to 3 feet.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTank length\u003c\/th\u003e\n\u003cth\u003eApprox. volume\u003c\/th\u003e\n\u003cth\u003eWP-408H suitability\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.5 ft\u003c\/td\u003e\n\u003ctd\u003e25–35 L\u003c\/td\u003e\n\u003ctd\u003eExcellent (nano)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 ft\u003c\/td\u003e\n\u003ctd\u003e50–60 L\u003c\/td\u003e\n\u003ctd\u003eIdeal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5–3 ft\u003c\/td\u003e\n\u003ctd\u003e80–100 L\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 ft+\u003c\/td\u003e\n\u003ctd\u003e100 L+\u003c\/td\u003e\n\u003ctd\u003eStep up to a larger HOB or canister\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNano and small community tanks (guppies, tetras, platies)\u003c\/li\u003e\n\u003cli\u003eBeginner and budget setups\u003c\/li\u003e\n\u003cli\u003eKeepers who want a space-saving slim filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNot Suitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTanks over 100 L — choose a larger HOB such as the \u003ca href=\"\/products\/seachem-tidal-55-hang-on-back-filter\"\u003eSeachem Tidal 55\u003c\/a\u003e or a canister\u003c\/li\u003e\n\u003cli\u003eHeavily-stocked or messy-fish tanks — limited media capacity\u003c\/li\u003e\n\u003cli\u003eRimless tanks where a HOB cannot hang securely\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSetup \u0026amp; Usage\u003c\/h2\u003e\n\u003cp\u003eHang the filter on the back rim, load and fit the cartridge, prime it by filling with tank water, and switch on. Rinse the media in old tank water every 2–4 weeks. Allow 4–6 weeks to cycle. See the \u003ca href=\"\/blogs\/news\/how-to-install-aquarium-filter\"\u003einstallation guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSobo WP-408H (slim hang-on)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter type\u003c\/td\u003e\n\u003ctd\u003eHang-on-back (HOB), slim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable tank size\u003c\/td\u003e\n\u003ctd\u003eup to ~100 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow rate\u003c\/td\u003e\n\u003ctd\u003e~680 LPH (verify on listing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration stages\u003c\/td\u003e\n\u003ctd\u003eMechanical, biological, chemical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eNano \u0026amp; small community tanks 2–3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCommon Problems It Solves\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eLimited space:\u003c\/strong\u003e the slim body barely protrudes behind the tank. \u003cstrong\u003eTight budgets:\u003c\/strong\u003e effective HOB filtration at a low price. \u003cstrong\u003eCloudy water in small tanks:\u003c\/strong\u003e 3-stage filtration keeps it clear. \u003cstrong\u003eLow oxygen:\u003c\/strong\u003e the return flow agitates the surface.\u003c\/p\u003e\n\n\u003ch2\u003eSobo WP-408H vs Other Filters\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSobo WP-408H\u003c\/th\u003e\n\u003cth\u003eTop filter\u003c\/th\u003e\n\u003cth\u003ePremium HOB\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003eVery affordable\u003c\/td\u003e\n\u003ctd\u003eVery affordable\u003c\/td\u003e\n\u003ctd\u003eMid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile\u003c\/td\u003e\n\u003ctd\u003eSlim hang-on\u003c\/td\u003e\n\u003ctd\u003eOn lid\u003c\/td\u003e\n\u003ctd\u003eBulkier hang-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia capacity\u003c\/td\u003e\n\u003ctd\u003eLow–medium\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest tank size\u003c\/td\u003e\n\u003ctd\u003eup to 100 L\u003c\/td\u003e\n\u003ctd\u003eup to 120 L\u003c\/td\u003e\n\u003ctd\u003eup to 300 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eExpert Recommendation\u003c\/h2\u003e\n\u003cp\u003eFor a nano or small community tank where space and budget matter, the Sobo WP-408H is our top slim-HOB pick. Add a little \u003ca href=\"\/products\/tcws-bio-media\"\u003eTCWS Bio-Media\u003c\/a\u003e to boost biological capacity, and in warm Indian summers pair it with a \u003ca href=\"\/products\/air-pump-sobo-sb-228-mini-ac-dc\"\u003eSobo air pump\u003c\/a\u003e for extra oxygen.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat tank size is the Sobo WP-408H suitable for?\u003c\/h3\u003e\n\u003cp\u003eSmall tanks up to about 100 litres — roughly a 2 to 3 foot aquarium.\u003c\/p\u003e\n\u003ch3\u003eWhat is the flow rate of the WP-408H?\u003c\/h3\u003e\n\u003cp\u003eApproximately 680 litres per hour — please check the product listing for the exact rating.\u003c\/p\u003e\n\u003ch3\u003eIs the WP-408H a hang-on filter?\u003c\/h3\u003e\n\u003cp\u003eYes — it is a slim hang-on-back (HOB) filter that clips onto the rear rim of the tank.\u003c\/p\u003e\n\u003ch3\u003eIs the Sobo WP-408H good for beginners?\u003c\/h3\u003e\n\u003cp\u003eYes — it is simple, affordable and easy to maintain, making it a great first filter for small tanks.\u003c\/p\u003e\n\u003ch3\u003eDoes the WP-408H come with media?\u003c\/h3\u003e\n\u003cp\u003eYes, it includes a filter cartridge; you can add bio-media such as TCWS Bio-Media for more biological capacity.\u003c\/p\u003e\n\u003ch3\u003eHow often do I clean the WP-408H?\u003c\/h3\u003e\n\u003cp\u003eRinse the media in old tank water every 2–4 weeks; never under the tap, as chlorine kills the bacteria.\u003c\/p\u003e\n\u003ch3\u003eIs the WP-408H quiet?\u003c\/h3\u003e\n\u003cp\u003eYes, when primed and topped up; keep the water level correct so the pump does not run dry.\u003c\/p\u003e\n\u003ch3\u003eCan I use the WP-408H on a betta tank?\u003c\/h3\u003e\n\u003cp\u003eYes, on a small betta tank — baffle the outflow if the current is too strong, as bettas prefer gentle flow.\u003c\/p\u003e\n\u003ch3\u003eCan the WP-408H be the only filter in my tank?\u003c\/h3\u003e\n\u003cp\u003eYes, for small tanks up to about 100 litres it provides complete filtration on its own.\u003c\/p\u003e\n\u003ch3\u003eIs the Sobo WP-408H good value in India?\u003c\/h3\u003e\n\u003cp\u003eYes — it is an affordable, space-saving HOB, ideal for nano and small community tanks.\u003c\/p\u003e\n\u003ch3\u003eDo I need an air pump with the WP-408H?\u003c\/h3\u003e\n\u003cp\u003eNot usually, but in hot Indian summers an air pump adds extra oxygen.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products \u0026amp; Guides\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eStep up:\u003c\/strong\u003e \u003ca href=\"\/products\/seachem-tidal-55-hang-on-back-filter\"\u003eSeachem Tidal 55\u003c\/a\u003e or \u003ca href=\"\/products\/fluval-107-canister-filter-10-30-us-gal-40-130-l\"\u003eFluval 107\u003c\/a\u003e. \u003cstrong\u003eTop filter option:\u003c\/strong\u003e \u003ca href=\"\/products\/sobo-aquarium-top-filter-wp-880f-power-15w-f-max-650l-hr-power-aquarium-filter\"\u003eSobo WP-880F\u003c\/a\u003e. \u003cstrong\u003eMedia \u0026amp; aeration:\u003c\/strong\u003e \u003ca href=\"\/products\/tcws-bio-media\"\u003eTCWS Bio-Media\u003c\/a\u003e, \u003ca href=\"\/products\/air-pump-sobo-sb-228-mini-ac-dc\"\u003eSobo air pump\u003c\/a\u003e. \u003cstrong\u003eCollections:\u003c\/strong\u003e \u003ca href=\"\/collections\/aquarium-filter\"\u003eAquarium Filters\u003c\/a\u003e, \u003ca href=\"\/collections\/filters-filtration\"\u003eFilters \u0026amp; Filtration\u003c\/a\u003e. \u003cstrong\u003eGuides:\u003c\/strong\u003e \u003ca href=\"\/blogs\/news\/types-of-aquarium-filters\"\u003eTypes of Aquarium Filters\u003c\/a\u003e, \u003ca href=\"\/blogs\/news\/canister-vs-hob-vs-sponge\"\u003eCanister vs HOB vs Sponge\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eConclusion\u003c\/h2\u003e\n\u003cp\u003eThe Sobo WP-408H slim hang-on aquarium filter is a compact, affordable, easy-to-use choice for small tanks up to about 100 litres (2–3 ft). With a space-saving slim design and simple 3-stage filtration, it keeps nano and community tanks clear and healthy — one of the best-value small aquarium filters in India.\u003c\/p\u003e","brand":"Fish Bazaar","offers":[{"title":"Default Title","offer_id":44377425117226,"sku":null,"price":1856.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/9238\/5322\/files\/51R3kYJ8XeL._SX300_SY300_QL70_FMwebp.webp?v=1779732927","url":"https:\/\/fishbazaarr.in\/products\/sobo-slim-filter-wp-408h-hang-on-filter","provider":"Fish Bazaar","version":"1.0","type":"link"}