{"product_id":"hygger-hg051-aquarium-cooling-fan-clamp-on","title":"Hygger Aquarium Cooling Fan HG051 | Adjustable 2-Fan Tank Cooler","description":"\u003cp\u003eThe \u003cstrong\u003eHygger HG051 Aquarium Cooling Fan\u003c\/strong\u003e is a clamp-on, dual-head cooling fan that drops aquarium temperature 2–4°F via surface evaporative airflow — perfect for summer heatwaves, high-output LED tanks, or any reef or planted aquarium that runs warmer than you'd like.\u003c\/p\u003e\n\n\u003cp\u003ePair it with a reliable heater and thermometer from our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/maintenance-water-care\"\u003eMaintenance \u0026amp; Water Care\u003c\/a\u003e collection to keep your tank's temperature dialed in year-round.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;\"\u003eWhy an Aquarium Cooling Fan?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrops temperature 2–4°F\u003c\/strong\u003e through evaporative cooling — no expensive inline chiller required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual adjustable fans\u003c\/strong\u003e let you angle airflow exactly where it's needed across the water surface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClamp-on installation\u003c\/strong\u003e mounts to most aquarium rims without tools.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation\u003c\/strong\u003e keeps the tank space livable, even in a bedroom or office.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-speed control\u003c\/strong\u003e lets you tune cooling vs. evaporation rate to your tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClamp the fan\u003c\/strong\u003e to the rim of your aquarium with the airflow directed across (not down into) the water surface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower on\u003c\/strong\u003e via included adapter and select a speed setting appropriate for the current tank temperature.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTop off evaporated water\u003c\/strong\u003e daily — evaporative cooling means the tank will lose more water than usual. Keep an auto top-off (ATO) or watering can ready.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMonitor with a thermometer\u003c\/strong\u003e and pair with a heater so your tank doesn't swing too cold overnight when ambient temperature drops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;max-width:560px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;width:40%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHygger\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHG051\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eAquarium cooling fan (clamp-on)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eFan Heads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e2 — individually adjustable angles\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eCooling Effect\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eTypically 2–4°F via evaporative cooling\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eSpeed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eMulti-speed control\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eMount\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eAdjustable clamp for most aquarium rims\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eWater Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFreshwater \u0026amp; Saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/eheim-125-watt-jager-trutemp-submersible-aquarium-heater-1\"\u003eEheim Jäger 125W Heater\u003c\/a\u003e — classic glass submersible heater to balance overnight cooling\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/icecap-icth50w-50w-titanium-aquarium-heater\"\u003eIceCap 50W Titanium Heater\u003c\/a\u003e — saltwater-safe titanium heater element\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/aquatop-pisces-25w-nano-aquarium-heater\"\u003eAquatop Pisces 25W Heater\u003c\/a\u003e — preset nano-tank heater\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/maintenance-water-care\"\u003eBrowse all maintenance \u0026amp; water care\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;\"\u003eWhen You Need a Cooling Fan\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReef tanks with high-output LEDs\u003c\/strong\u003e — bright reef lighting adds noticeable heat to the water.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlanted tanks with strong PAR fixtures\u003c\/strong\u003e — same problem, freshwater edition.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSummer temperature spikes\u003c\/strong\u003e — especially in rooms without strong AC.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensitive species\u003c\/strong\u003e — coldwater fish, certain wild-caught species, and most corals prefer stable temperatures below 80°F.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow much will this actually cool my tank?\u003c\/strong\u003e\u003cbr\u003eMost setups see a 2–4°F drop depending on humidity, fan speed, surface area, and how open your tank's lid is. Open-top tanks see the biggest effect; closed glass lids reduce evaporation and cooling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I have to remove the glass lid?\u003c\/strong\u003e\u003cbr\u003eFor best results, yes — or replace it with a screen\/mesh lid. The fan cools by promoting evaporation, which requires open water surface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it cause excessive evaporation?\u003c\/strong\u003e\u003cbr\u003eYou will see noticeably more evaporation when the fan is running. Top off with RO\/DI (saltwater) or dechlorinated freshwater daily. An auto top-off (ATO) makes this effortless.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it overnight?\u003c\/strong\u003e\u003cbr\u003eYes, but consider pairing with a heater to prevent overnight temperature swings when ambient room temperature drops. A thermostat or smart plug can switch the fan off below a target temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFreshwater and saltwater safe?\u003c\/strong\u003e\u003cbr\u003eYes — the fan does not contact tank water, only blows ambient air across the surface, so it's safe for both freshwater and saltwater (including reef) systems.\u003c\/p\u003e","brand":"Hygger","offers":[{"title":"Default Title","offer_id":48573363945691,"sku":"HG051","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_d6f2bf23-6274-4976-a2d4-706139e296d8.png?v=1775562411","url":"https:\/\/squeakysaquatics.com\/products\/hygger-hg051-aquarium-cooling-fan-clamp-on","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}