I have a terrible heater. It didn't work properly. It didn't heat my tank. It started whistling and hissing so I turned it off. Thanks to many others who have asked what it could mean differently in the fish farming community, I have learned that the heater can fail and burn out. kill your fish and possibly set your place on fire. I returned it, got a refund and got a Tetra HT30 from Petsmart that works great! It maintains a consistent water temperature suitable for my fish. FYI, a petsmart employee told me that Chewy heaters are cheaper and Petsmart's prices are the same! So I only paid $12 for a $27 heater :)
Tetra HT Submersible Aquarium Heater: Efficiently Regulate Temperature with Electronic Thermostat
9 Review
๐ Fluval E300 Electronic Heater - 300W Advanced Aquarium Heater for Tanks up to 100 Gallons (A774)
9 Review
Hardy Leaf Black Forest Asian Java Fern Potted Live Water Aquatic Aquarium Plants For Freshwater Fish Tank By Greenpro Microsorum Pteropus
39 Review
Accumulative electric water heater Thermex Ceramik 50 V, white
11 Review
๐ Enhance Aquarium Maintenance with hygger Carbon Fiber 6 in 1 Cleaning Tool Kit โ Algae Scraper, Scrubber Pad, Sponge, and Telescopic Handle for Optimal Fish Tank Cleaning in Saltwater and Freshwater Environments
5 Review
FISH PROS Fine Mesh Handle
3 Review
Penn Plax QN2 Quick Fish
9 Review
Aqueon Siphon Vacuum Gravel Cleaner Mini: Compact 5-Inch Cleaning Solution
9 Review