{"product_id":"zoo-med-bettatherm-betta-heater","title":"Zoo Med BettaTherm Betta Heater","description":"\u003cp\u003e\u003cstrong\u003eA pocket-sized heater built for one-fish, one-bowl setups.\u003c\/strong\u003e The Zoo Med BettaTherm is a 7.5 W submersible heater sized for 1–3 US gallon (3.8–11.4 L) betta bowls and small tanks, lifting water temperature roughly 5–10°F (2.7–5.4°C) above room temperature so a betta kept in a bowl on a cool bench or in an air-conditioned room can sit in the 24.5–26.7°C range it needs, without the cost or footprint of a full aquarium heater.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully submersible\u003c\/strong\u003e — can be buried under up to 2.5 cm of sand or gravel and hidden from view.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSized for small volumes\u003c\/strong\u003e — built specifically for 1–3 US gallon (3.8–11.4 L) bowls and nano tanks, where most full-size aquarium heaters are oversized.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreset operation\u003c\/strong\u003e — no dial to set or misread; the heater runs to lift water 5–10°F (2.7–5.4°C) over ambient and holds there.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass and acrylic safe\u003c\/strong\u003e — suits both bowl and small tank materials.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWattage\u003c\/th\u003e\n\u003ctd\u003e7.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e240 V AC, AU plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated volume\u003c\/th\u003e\n\u003ctd\u003e1–3 US gal (3.8–11.4 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature rise\u003c\/th\u003e\n\u003ctd\u003eApprox. 5–10°F (2.7–5.4°C) above ambient room temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThermostat\u003c\/th\u003e\n\u003ctd\u003ePreset, non-adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlacement\u003c\/th\u003e\n\u003ctd\u003eFully submersible; may be buried under up to 2.5 cm of substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eHeat sizing — why 7.5 W is enough here\u003c\/h3\u003e\u003cp\u003eZoo Med builds the BettaTherm as a single fixed-wattage heater for 1–3 US gallon (3.8–11.4 L) bowls only, rather than publishing a wattage-per-litre table across tank sizes — at this volume, 7.5 W is enough to hold the stated 5–10°F (2.7–5.4°C) rise in a typical Australian living room. For anything larger than 3 US gallons (11.4 L), or a room that runs consistently cold, step up to a variable-wattage aquarium heater sized to the tank instead.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for betta bowls and nano tanks from 1 to 3 US gallons (3.8–11.4 L) that need a gentle, low-wattage lift above room temperature. Not suitable for larger aquariums, and not intended to run dry — it must stay fully submerged whenever it is switched on.\u003c\/p\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cp\u003eMains-powered and fully submersible: plug into a GFCI\/RCD-protected outlet with a drip loop in the cord, never let the heater run dry, and unplug it before doing any tank maintenance or placing a hand in the water. It is not a repairable item — a faulty unit should be returned rather than opened.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eWipe any algae or mineral build-up from the heater body during routine bowl cleaning, and check the cord and body for cracks before each use. Always unplug before removing the heater from the water.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Zoo Med's manufacturer warranty against defects; contact us with your order details if you believe the unit has failed. Warranty is in addition to your rights under Australian Consumer Law.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this heat a standard 10-gallon tank?\u003c\/h4\u003e\u003cp\u003eNo — it's built for 1–3 US gallon (3.8–11.4 L) bowls and nano tanks. A larger aquarium needs a heater sized to that volume.\u003c\/p\u003e\u003ch4\u003eCan I bury it under gravel?\u003c\/h4\u003e\u003cp\u003eYes, up to about 2.5 cm of sand or gravel, as long as it stays fully submerged.\u003c\/p\u003e\u003ch4\u003eIs the temperature adjustable?\u003c\/h4\u003e\u003cp\u003eNo. It's a preset heater that lifts water roughly 5–10°F (2.7–5.4°C) above room temperature rather than holding a dial-set target.\u003c\/p\u003e\u003ch4\u003eWhat temperature do bettas actually need?\u003c\/h4\u003e\u003cp\u003eMost bettas do best around 24.5–26.7°C (76–80°F); this heater is designed to help reach that range from typical Australian room temperatures.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003ePairs with an aquarium thermometer to confirm the bowl has reached a safe temperature, since this heater's rise is preset rather than dial-adjustable.\u003c\/p\u003e","brand":"ZooMed","offers":[{"title":"Default Title","offer_id":55293329834275,"sku":"ZM366","price":58.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/zoo-med-bettatherm-betta-hea-43875827843363.webp?v=1790237147","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/zoo-med-bettatherm-betta-heater","provider":"Nicks AOT","version":"1.0","type":"link"}