Heating large tanks with your gas hot water heater. Save 40% on energy cost! | REEF2REEF Saltwater and Reef Aquarium Forum
![Accidentally left heater turned off after water change for a few days in a tropical tank, all fish (20 neon tetra's, seven albino corydora's and one pearl gourami) are acting normal, eating Accidentally left heater turned off after water change for a few days in a tropical tank, all fish (20 neon tetra's, seven albino corydora's and one pearl gourami) are acting normal, eating](https://preview.redd.it/zea7qt3604r81.png?width=640&crop=smart&auto=webp&s=38881060b051570f761a2ba85422d13eb4b326b8)
Accidentally left heater turned off after water change for a few days in a tropical tank, all fish (20 neon tetra's, seven albino corydora's and one pearl gourami) are acting normal, eating
![Need some advice for keeping my tank cool in the summer heat. Tank has been sitting at around 78 degrees with the heater off. No fish as I'm still setting up and Need some advice for keeping my tank cool in the summer heat. Tank has been sitting at around 78 degrees with the heater off. No fish as I'm still setting up and](https://i.redd.it/gnrjlsk0rzb31.jpg)