{"product_id":"hydor-koralia-evolution-circulation-wave-pump-750-850-gph","title":"Hydor Koralia Evolution Circulation \u0026 Wave Pump 750-850 GPH","description":"\u003cp\u003eIn this review of the Hydor Koralia Evolution 850 gph pump the bottom line is simple: it is aimed at hobbyists who need a compact, energy efficient wavemaker for mid-sized aquariums. The Koralia Evolution stands out for its \u003cstrong\u003ehigh flow with low consumption\u003c\/strong\u003e, delivering up to 850 gph while drawing only 5 watts, and its improved magnet and suction cup support that keep it steady on tanks with glass or acrylic up to 1\/2 in thick. The reviewer found it particularly useful where quiet, continuous circulation and directional control are priorities.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eVibration absorbing mount:\u003c\/strong\u003e The new magnet and suction cup support reduces vibration and holds the pump securely on glass or acrylic up to 1\/2 in thick, preventing drift during operation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eShaft-less impeller technology:\u003c\/strong\u003e Provides the 850 gph flow while simplifying maintenance and reducing points of mechanical wear for longer service life.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEnergy efficient performance:\u003c\/strong\u003e Uses just 5 watts, consuming about 50% less power than older Koralia models while producing up to 20% more water movement.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAdjustable flow direction:\u003c\/strong\u003e The sphere joint allows precise aiming of the water flow so circulation patterns can be tailored to the tank layout and livestock needs.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSmaller footprint:\u003c\/strong\u003e A more compact housing than older Koralia pumps achieves comparable flow rates without dominating aquascape space.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCable protector included:\u003c\/strong\u003e The included protector helps prevent nibbling damage and makes the unit safer for tanks with urchins, puffers, parrot fish and triggers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Koralia Evolution 850 is best for aquarists with 50 to 100 gallon freshwater or marine setups who want a reliable, quiet circulation pump that conserves electricity. It suits reef keepers and fish-only hobbyists who need directional flow and a low-profile pump that can be positioned securely on glass or acrylic.\u003c\/p\u003e\n\u003cp\u003eLess suitable are very small nano tanks under 50 gallons where the flow may be excessive, or setups that require integrated programmable control without the separate Koralia 12V controllable power supply when used as a wavemaker. If fully integrated timed wave control is critical, consider controllable 12V options instead.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eVery low power draw with strong water movement ideal for long runtime and lower bills.\u003c\/li\u003e\n \u003cli\u003eQuiet operation that keeps background noise minimal in living spaces.\u003c\/li\u003e\n \u003cli\u003eSecure magnet and suction cup arrangement that reduces vibration and holds the pump in place.\u003c\/li\u003e\n \u003cli\u003eCompact size and directional sphere joint make placement and flow tuning easy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSome users report mixed durability over multiple years, so occasional replacement is possible after prolonged use.\u003c\/li\u003e\n \u003cli\u003eTo use wavemaker functionality you need a separate controllable 12V powerhead solution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHydor\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eModel flow\u003c\/td\u003e\n\u003ctd\u003e750-850 gph\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e5 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTank size\u003c\/td\u003e\n\u003ctd\u003eRecommended 50 to 100 gallons\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eMagnet and suction cup for up to 1\/2 in glass or acrylic\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eDesign\u003c\/td\u003e\n\u003ctd\u003eShaft-less impeller, sphere joint for adjustable direction\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eIncluded accessory\u003c\/td\u003e\n\u003ctd\u003eCable protector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Hydor Koralia Evolution 850 is a solid choice for mid-sized tanks that need strong, quiet circulation without high energy use. It delivers excellent directional flow, convenient mounting and low operating costs, making it good value for hobbyists who prioritize steady water movement and minimal noise. Those seeking advanced built-in wavemaker control should note the separate controllable power requirement.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this unit be used in marine and freshwater tanks?\u003c\/strong\u003e\u003cbr\u003eYes, it is suitable for both fresh and marine aquariums and recommended for tanks in the 50 to 100 gallon range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow thick can the tank glass be for mounting?\u003c\/strong\u003e\u003cbr\u003eThe included magnet and suction cup support can safely hold the pump on glass or acrylic up to 1\/2 in thick.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the pump quiet and energy efficient?\u003c\/strong\u003e\u003cbr\u003eYes, customers report quiet operation and it runs on just 5 watts, typically using about 50% less power than older models.\u003c\/p\u003e","brand":"Hydor","offers":[{"title":"Default Title","offer_id":48167128727771,"sku":"B0036RXO3O","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81IlS3RvOrL._AC_SL1500.jpg?v=1769242691","url":"https:\/\/gearmusthave.com\/products\/hydor-koralia-evolution-circulation-wave-pump-750-850-gph","provider":"GearMustHave","version":"1.0","type":"link"}