--- product_id: 162607429 title: "Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear" brand: "oase" price: "2483578₫" currency: VND in_stock: true reviews_count: 13 category: "Oase" url: https://www.desertcart.vn/products/162607429-indoor-aquatics-heatup-300-watt-aquarium-heater-clear store_origin: VN region: Vietnam --- # fully submersible glass design 300W powerful heating precise adjustable temperature Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear **Brand:** oase **Price:** 2483578₫ **Availability:** ✅ In Stock ## Summary > 🔥 Elevate your aquarium’s vibe with precision warmth! ## Quick Answers - **What is this?** Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear by oase - **How much does it cost?** 2483578₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/162607429-indoor-aquatics-heatup-300-watt-aquarium-heater-clear) ## Best For - oase enthusiasts ## Why This Product - Trusted oase brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Secure:** Durable glass construction with suction cups and bracket for stable placement. - • **Power Meets Precision:** 300 Watts of reliable heat, perfect for tanks up to 80 gallons. - • **Consistent Comfort, Always:** Patented bi-metal tech ensures uniform temperature for your aquatic friends. - • **Tailored Temperature Control:** Easily adjustable settings with a clear heating indicator light. - • **Versatile Aquatic Compatibility:** Ideal for both fresh and saltwater environments. ## Overview The OASE HeatUp 300 Watt Aquarium Heater delivers consistent, adjustable heating with patented bi-metal technology in a sleek, fully submersible glass design. Suitable for tanks up to 80 gallons, it features secure mounting options and works flawlessly in both fresh and saltwater setups. ## Description The HeatUp line of aquarium heaters are a reliable way of creating and maintaining uniform temperature levels for your freshwater or marine aquarium environment. The robust double insulated quartz glass tube provides additional safety for aquarium use and is able to withstand greater temperature fluctuations than glass. The HeatUp temperature scale can be adjusted between 66°F - 90°F. The control system has a patented secondary knob for accurate readjustment of the temperature (+/- 2°F) and can be adjusted using the included post calibration tool. Temperature levels are monitored and controlled by bi-metal technology for automated heating with a thermal shutoff switch for added protection. Additionally, the heating function is displayed via the activated control light. Integrate this heater into the FiltoSmart 300 or BioMaster 600 to combine filtration and heating into one location. Use the ThermoFit FiltoSmart 300 (not included, model number 48567) to secure the heater into the FiltoSmart 300 filter. Integrating the heater reduces the amount of additional equipment seen in the aquarium. The optimal aquarium size for this heater is 80 gallons. The included holder with suction cups to install the heater to the side of the aquarium. Designed using German engineering and manufactured in Italy, this energy efficient heater is protected with a 3 year warranty. Review: Great addition to my pre-existing biomaster 600 - The build feels solid and it does what it's supposed to. I use it with the biomaster 600 (It's cheaper to buy the biomaster and heater seperately than if you got the biomaster thermo model) and installation was simple since it comes with the adapter. It keeps the temp steady and the little red light lets you know when it’s running. I really like that it fits right into the filter so there’s nothing hanging in the tank. Takes up zero space inside the aquarium which is a big plus for me. It’s not the cheapest heater out there but it feels reliable and well made, and I haven’t had any issues with it so far. Seems like it’ll last a while. Review: Works Great in a Bio Master 600 - I have this in a Oase Bio Master 600 canister filter and the combination works well in my 90 gallon. Not only is it nice to have the heater removed from the tank space, but the heating of the filtered, circulated water seems to keep the entire tank a consistent temperature. The heater temperature setting dial was spot on for my tank, too. If the setting vs actual should be off, you can calibrate it to your own set up. The only down side having the heater in the filter is the there is no on/off indicator visible. I have to unplug the heater to service the filter, so some sort of visual indicator other than temperature would give a little reassurance I didn't forget to plug it back in or maybe damaged it from handling. If tank mounting, the clip seems well made and designed and Oase has very good suction cups that stay attached and they have a little tab to lift an edge for easier removal. ## Features - The Oase HeatUp 300 Watt Aquarium Heater features uniform temperature level thanks to the patented bi-metal technology - 300 Watts. Recommended for tanks up to 80 gallons. - Glass construction. Fully submersible. Suction cups and bracket for securing to the aquarium. - Adjustable temperature control. The heating function is displayed via the activated control light. For use in fresh and saltwater aquariums.14.6" long. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07LBYKSHQ | | Best Sellers Rank | #61,976 in Pet Supplies ( See Top 100 in Pet Supplies ) #124 in Aquarium Heaters | | Brand | OASE | | Brand Name | OASE | | Color | Clear | | Customer Reviews | 4.4 out of 5 stars 93 Reviews | | Global Trade Identification Number | 00706759338059 | | Included Components | Item | | Item Length | 14 Inches | | Item Type Name | 300 Watt Aquarium Heater | | Item Weight | 0.32 Kilograms | | Manufacturer | Oase | | Material | glass | | Material Type | glass | | Model Number | 33805 | | Part Number | 33805 | | Smart Home Compatibility | Not Smart Home Compatible | | UPC | 706759338059 | | Unit Count | 1 Count | | Warranty Description | 3 year warranty | | Wattage | 300 watts | ## Images ![Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear - Image 1](https://m.media-amazon.com/images/I/613mAyzdhAL.jpg) ![Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear - Image 2](https://m.media-amazon.com/images/I/71t-QXVlHtL.jpg) ![Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear - Image 3](https://m.media-amazon.com/images/I/71Ihx-Ad1jL.jpg) ![Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear - Image 4](https://m.media-amazon.com/images/I/41CbBLUDyJL.jpg) ![Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear - Image 5](https://m.media-amazon.com/images/I/710rmY1xIZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great addition to my pre-existing biomaster 600 *by R***. on June 8, 2025* The build feels solid and it does what it's supposed to. I use it with the biomaster 600 (It's cheaper to buy the biomaster and heater seperately than if you got the biomaster thermo model) and installation was simple since it comes with the adapter. It keeps the temp steady and the little red light lets you know when it’s running. I really like that it fits right into the filter so there’s nothing hanging in the tank. Takes up zero space inside the aquarium which is a big plus for me. It’s not the cheapest heater out there but it feels reliable and well made, and I haven’t had any issues with it so far. Seems like it’ll last a while. ### ⭐⭐⭐⭐⭐ Works Great in a Bio Master 600 *by T***H on May 10, 2024* I have this in a Oase Bio Master 600 canister filter and the combination works well in my 90 gallon. Not only is it nice to have the heater removed from the tank space, but the heating of the filtered, circulated water seems to keep the entire tank a consistent temperature. The heater temperature setting dial was spot on for my tank, too. If the setting vs actual should be off, you can calibrate it to your own set up. The only down side having the heater in the filter is the there is no on/off indicator visible. I have to unplug the heater to service the filter, so some sort of visual indicator other than temperature would give a little reassurance I didn't forget to plug it back in or maybe damaged it from handling. If tank mounting, the clip seems well made and designed and Oase has very good suction cups that stay attached and they have a little tab to lift an edge for easier removal. ### ⭐⭐⭐⭐⭐ Excellent heater either alone or with OASE biomaster filter *by G***E on April 24, 2025* This is an excellent heater. You can either use this separately like any other heater, or what I personally did was use it with my biomaster filter from Oase. It makes it very easy because I don’t have to keep the heater inside the tank. It’s perfect size for my 90cm Oase scaperline tank. Easy to adjust temperature, very durable, and accurate. The ease of use for me is so important I won’t ever buy another heater other than these. ## Frequently Bought Together - OASE Indoor Aquatics HeatUp 300 Watt Aquarium Heater, Clear - OASE BioMaster External Filter for Aquariums Up to 160 Gallons, Multi-Stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering - Seachem Matrix, 4 L / 1 gal. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/162607429-indoor-aquatics-heatup-300-watt-aquarium-heater-clear](https://www.desertcart.vn/products/162607429-indoor-aquatics-heatup-300-watt-aquarium-heater-clear) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-04*