![Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies](https://m.media-amazon.com/images/I/91-t+FwADQL.jpg)
Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies
![Just got a fluval M50 heater, has these small scratches under the glass on the mirror finish, is this something to be worried about or normal for the M50? No cracks or Just got a fluval M50 heater, has these small scratches under the glass on the mirror finish, is this something to be worried about or normal for the M50? No cracks or](https://preview.redd.it/just-got-a-fluval-m50-heater-has-these-small-scratches-v0-c4emyjbx2oe81.jpg?width=640&crop=smart&auto=webp&s=93de3f179ebd8bac9e126904306c3fabb634a4ba)
Just got a fluval M50 heater, has these small scratches under the glass on the mirror finish, is this something to be worried about or normal for the M50? No cracks or
![Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies](https://m.media-amazon.com/images/I/71oUhu5PtIL.jpg)
Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies
![Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies](https://m.media-amazon.com/images/I/81CHh1+rx2L._AC_UF350,350_QL80_.jpg)
Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies
![Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies](https://images-na.ssl-images-amazon.com/images/I/91PhEeS6fML._AC_UL200_SR200,200_.jpg)
Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies
![Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781 : Amazon.ca: Pet Supplies](https://m.media-amazon.com/images/I/813vqgEvbdL._AC_UF350,350_QL80_.jpg)