--- product_id: 4563497 title: "Rena SmartHeater Aquarium Heater, 50W" brand: "mars fishcare north amer" price: "€ 6.32" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.gr/products/4563497-rena-smartheater-aquarium-heater-50w store_origin: GR region: Greece --- # UL-certified safety Smart integration alert 50W powerful heating Rena SmartHeater Aquarium Heater, 50W **Brand:** mars fishcare north amer **Price:** € 6.32 **Availability:** ❌ Out of Stock ## Summary > 🔥 Stay ahead of the curve with smart, safe warmth for your aquatic friends! ## Quick Answers - **What is this?** Rena SmartHeater Aquarium Heater, 50W by mars fishcare north amer - **How much does it cost?** € 6.32 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/4563497-rena-smartheater-aquarium-heater-50w) ## Best For - mars fishcare north amer enthusiasts ## Why This Product - Trusted mars fishcare north amer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Design:** Engineered to withstand daily aquarium conditions - • **UL-Approved Safety:** Certified for reliable, worry-free use - • **Precision 50W Power:** Efficiently maintains optimal aquatic warmth - • **Smart Temperature Alerts:** Instant abnormal heat notifications to protect your pets - • **Seamless SmartFilter Compatibility:** Works flawlessly with XP and smartfilters for ultimate control ## Overview The Rena SmartHeater Aquarium Heater delivers 50 watts of precise heating power with UL certification for safety. It features smart temperature alerts and integrates seamlessly with XP and smartfilters, ensuring your aquatic environment stays perfectly controlled and your pets protected. ## Description The unbreakable, ul-approved smartheater has an abnormal temperature alert and integrates with all xp and smartfilters. N/A Review: UNSAFE - This heater cracked open in the middle of the night and I woke up to my fire alarm and smoke coming out of my aquarium. Thankfully my two turtles seem to be ok. Review: Stops working. - These heaters stop working way too soon. Will not buy another. ## Features - Size: 50 Watt ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 2.7 out of 5 stars 12 Reviews | ## Images ![Rena SmartHeater Aquarium Heater, 50W - Image 1](https://m.media-amazon.com/images/I/41A1iQ6zWDL.jpg) ## Questions & Answers **Q: Can this heater only be used if you have a Rena Smartfilter?** A: It will work with any filters with the same pipe size. I have used these for years on standard hang on back filters. I've actually never used on a Rena filter. **Q: Is anyone using this in a Fluval Chi 5 gallon? Is it fully submersible and does it suction cup to the side of the tank like other heaters?** A: Never used it for 5 gallon, I have it for 10 gallons. You can fully submerge it underwater with inly the cable sticking out of the water, the suction cups arent the cheap ones that come off easily **Q: Can this heater be used with non-RENA/API canister filters?** A: very good ## Customer Reviews ### ⭐ UNSAFE *by S***S on July 9, 2018* This heater cracked open in the middle of the night and I woke up to my fire alarm and smoke coming out of my aquarium. Thankfully my two turtles seem to be ok. ### ⭐⭐ Stops working. *by K***N on May 12, 2017* These heaters stop working way too soon. Will not buy another. ### ⭐⭐⭐⭐ Innovative Product that Integrates with the Rena SmartFilters *by D***R on June 16, 2012* I really like the innovative concept behind the way this heater integrates with the Rena SmartFilter as an alternate for the filter intake tube. This heater design would seem to present less danger of a hot element coming into contact with one of the tank dwellers and would also seem to be less fragile/susceptible to damage as compared to the typical stand-alone glass tube heaters. I docked the product one star for concerns over long-term reliability of these units simce I've had to replace these more often than other stand-alone glass heater units I've used in the past. However, the fact that I'm still using these despite the occasional need for replacement says something for how much I like this innovative design. If you've got a Rena SmartFilter already, I'd recommend giving these a try to see what you think. Otherwise, I'd have to say that buying a Rena SmartFilter just to be able to make use of this heater might be a poor decision due to other deficiencies inherent in the SmartFilter design... that is, unless they've updated the SmartFilter design since the ones I purchased. If you'd like to know more about my concerns/experiences regarding my Rena SmartFilter products, take a look at my other reviews which include a review of the Rena SmartFilter 30 product (of which I presently own/use two). --- ## 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.gr/products/4563497-rena-smartheater-aquarium-heater-50w](https://www.desertcart.gr/products/4563497-rena-smartheater-aquarium-heater-50w) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-05-31*