![Amazon.com : Fluval T100 Fully Electronic Heater for Freshwater Aquariums up to 30 Gal. : Pet Supplies Amazon.com : Fluval T100 Fully Electronic Heater for Freshwater Aquariums up to 30 Gal. : Pet Supplies](https://m.media-amazon.com/images/I/81BZ+uKyPxL.jpg)
Amazon.com : Fluval T100 Fully Electronic Heater for Freshwater Aquariums up to 30 Gal. : Pet Supplies
![Fluval T-Series Heater Completes Hagen's T, E, M, P, Bingo | Reef Builders | The Reef and Saltwater Aquarium Blog Fluval T-Series Heater Completes Hagen's T, E, M, P, Bingo | Reef Builders | The Reef and Saltwater Aquarium Blog](https://reefbuilders.com/wp-content/blogs.dir/1/files/2022/05/fluval-tseries-heater.jpeg)
Fluval T-Series Heater Completes Hagen's T, E, M, P, Bingo | Reef Builders | The Reef and Saltwater Aquarium Blog
![I bought these fluval heater and it's made for up to 30 gallon tanks , but it doesn't seem to be heating my 20 at all, i have it set to 82 I bought these fluval heater and it's made for up to 30 gallon tanks , but it doesn't seem to be heating my 20 at all, i have it set to 82](https://i.redd.it/5hzrbl79lb9a1.jpg)
I bought these fluval heater and it's made for up to 30 gallon tanks , but it doesn't seem to be heating my 20 at all, i have it set to 82
![Question on the fluval m series heaters. Is the line shown on the heater the maximum water line or can the entire heater be submerged? : r/Aquariums Question on the fluval m series heaters. Is the line shown on the heater the maximum water line or can the entire heater be submerged? : r/Aquariums](https://preview.redd.it/ogg3w4ypqzr81.jpg?width=640&crop=smart&auto=webp&s=d7dfe4014627a9618acc16756d7cc1df1b2e1282)