SEO Link List

automotive & industrial

Brake Tools

Bumper Stickers, Decals & Magnets

Bumpers & Bumper Accessories

Cleaning & Maintenance

Diagnostic, Test & Measurement Tools

Engine Tools

Exterior

Exterior Care

Finishing

Gaskets

Glass Care

Hood Scoops & Vents

Horns & Accessories

Ignition & Electrical

Interior

Interior Care

Jump Starters, Battery Chargers & Portable Power

Lighting & Electrical

Mirrors & Parts

Plumbing

Pullers

Running Boards & Steps

Safety

Shocks, Struts & Suspension

Snow & Ice

Steering & Suspension Tools

Thread Repair Kits

Tires

Tools & Equipment

Towing Products & Winches

Trailer Accessories

Truck Bed & Tailgate Accessories

baby products

Activity & Entertainment

Apparel & Accessories

Baby & Toddler Toys

Baby Care

Car Seats & Accessories

Diapering

Feeding

Gifts

Nursery

Potty Training

Safety

Strollers & Accessories

Travel Gear

beauty & personal care

Foot, Hand & Nail Care

Hair Care

Makeup

Personal Care

electronics

Camera & Photo

Car & Vehicle Electronics

Cell Phones & Accessories

Computers & Accessories

Home Audio

Household Batteries, Chargers & Accessories

Television & Video

Video Game Consoles & Accessories

Wearable Technology

health & household

Baby & Child Care

Health Care

House Supplies

Oral Care

Personal Care

Sexual Wellness

Sports Nutrition

Wellness & Relaxation

home & kitchen

Bath

Bedding

Heating, Cooling & Air Quality

Kitchen & Dining

Lighting & Ceiling Fans

Seasonal Decor

Storage & Organization

Vacuums & Floor Care

office products

Educational Supplies

Office & School Supplies

patio, lawn & garden

Gardening & Lawn Care

Outdoor Decor

Outdoor Heating & Cooling

Outdoor Lighting

Outdoor Power Tools

Patio Furniture & Accessories

Pest Control

pet supplies

Birds

Cats

Dogs

Fish & Aquatic Pets

Horses

Reptiles & Amphibians

toys & games

Arts & Crafts

Collectible Toys

Dolls & Accessories

Dress Up & Pretend Play

Games & Accessories

Kids' Electronics

Puppets & Puppet Theaters

Puzzles

Remote & App Controlled Vehicles & Parts

Sports & Outdoor Play

Stuffed Animals & Plush Toys

Tricycles, Scooters & Wagons

Vehicles

FREESEA Aquarium Heater for Fish Tank

Curated from 65 real Reddit conversations

Refreshed on: February 12, 2025

Product Image 1
Product Image 2
Product Image 3
Product Image 4
Product Image 5
Product Image 6
Product Image 7
Product Image 8
Product Image 9

FREESEA Aquarium Heater for Fish Tank

Brand: FREESEA
Price: $27
Snoop Score:
3.0
Sentiment
5.0
Popularity
2.2
Technical
3.2
Buy on Amazon for $27See All Aquarium Heaters Reviews
As an Amazon Associate, I earn from qualifying purchases.

Snoop's Take

The FREESEA Aquarium Heater is a submersible heating solution designed for fish tanks ranging from 10 to 20 gallons, suitable for both saltwater and freshwater environments. With features like automatic shutoff protection and a user-friendly digital LED controller, this heater ensures the safety and comfort of your aquatic life. Users have praised its effective heating performance, noting, "Keeps the whole tank an even temp," though some have expressed concerns about thermostat accuracy, stating, "Temp gauge reads 72 n you can have it on 85 n still won’t kick on." Overall, despite some reported issues regarding temperature settings, the FREESEA Aquarium Heater is generally recommended for its reliable features and safety mechanisms.

Not for you? Check out our other rated Aquarium Heaters

I’d put it upright next to the intake and output so it spreads the heat.

Positive Feedback

Is it normal for heaters to not work correctly first couple days or so?

Negative Feedback
Product
3.0
FREESEA Aquarium Heater for Fish Tank
Buy on Amazon for $27
Freshwater Aquariums
9 / 10
Saltwater Aquariums
8 / 10
Marine Life Habitats
8 / 10
Small to Medium Tanks
9 / 10
See how this compares to all Aquarium Heaters

What it does well!

Key strengths users can’t stop talking about.
Good heat distribution
“I’d put it upright next to the intake and output so it spreads the heat.”➕
“Yep this is the way to go.”➕
“Keeps the whole tank an even temp.”➕
“Agreed. Maybe put the thermometer on the far side of the tank?”➕
Has automatic shutoff feature
“Get this one!! It’s really good. Has an automatic shutoff if the water goes too low.”➕
Effective heating performance
“i think ymmv on how true to temp heaters heat bc they'll have to work harder if your ambient room temp is low.”➕

Where it needs some work!

Areas to watch—feedback on possible improvements.
Heater thermostat may be inaccurate
“Is it normal for heaters to not work correctly first couple days or so?”➕
“this is rly common with preset heaters which is why it’s highly recommended to get an adjustable one.”➕
“Thought I was just buying broken heaters, till I found out adjustable heaters work better.”➕
“I concluded it was defective, and am ordering the Eheim Jager 50 watt.”➕
Preset heaters may not heat accurately
“I'm wondering - are all the heater's you've been buying 'rated higher than 5G'? this SHOULDN'T be a factor - but I'm wondering if maybe the heaters are too big for the tank?”➕
Heater may smoke if water level is low
“the heater started smoking! 😬 So now I always put my heaters horizontal and down near the bottom of the tank.”➕
“The water wasn't circulating enough in the area so it turned off constantly.”➕
Heater may fail to shut off at correct temperatures
“I have a growing collection of heaters that SAID they automatically shut off at a certain temp, but then started to cook my poor fish.”➕
Thermostat may be inaccurate
“It Absolutely SUCKZ! Temp gauge reads 72 n you can have it on 85 n still won’t kick on.”➕
Can shock users when out of water
“my heater shocked me!!!! idk what to do is it safe to put back in?”➕
“Get a new one asap. Never leave heaters on when out of water.”➕
“Mine melted my bettas tank.”➕
“Toss it but also never have the heater on when it’s out of water.”➕
Can explode if not handled properly
“Mine exploded when I put it back in the water without knowing it was that hot.”➕
“yep. mine exploded.”➕
“My dad actually shattered his fish tank once because he didn’t realize the heater was plugged in.”➕
“they will, happened to me, glass and this black sand stuff everywhere.”➕
Can burn surfaces if not unplugged
“Mine burnt a square into my carpet 😂.”➕
“i melted my carpet down to the wood😭 forgot to unplug it.”➕
Can melt or damage tanks
“Oh they indeed do crack and explode when they are set for 80 you do a full water change and you don't unplug it.”➕

Compare On All Talked About Dimensions

Product NameImagePriceScoreCompareSee DetailsBuy Now
AQQA Aquarium Heater 500W for 66-135 Gallon Fish TanksAQQA Aquarium Heater 500W for 66-135 Gallon Fish Tanks$25
7.3
DetailsBuy
Fluval E 300 Watt Electronic HeaterFluval E 300 Watt Electronic Heater$34
7.2
DetailsBuy
HITOP 50W Adjustable Aquarium HeaterHITOP 50W Adjustable Aquarium Heater$11
7.1
DetailsBuy
HiTauing Aquarium Heater - Submersible Fish Tank HeaterHiTauing Aquarium Heater - Submersible Fish Tank Heater$37
6.8
DetailsBuy
hygger Aquarium Heater with Digital LED Controllerhygger Aquarium Heater with Digital LED Controller$43
6.5
DetailsBuy
Aqueon Submersible Aquatic Flat Heater 15 WattsAqueon Submersible Aquatic Flat Heater 15 Watts$7
6.5
DetailsBuy
Dreyoo 2 Set Aquarium Fish Tank HeaterDreyoo 2 Set Aquarium Fish Tank Heater$23
6.0
DetailsBuy
HITOP-Fish Hitop 100W Adjustable Aquarium HeaterHITOP-Fish Hitop 100W Adjustable Aquarium Heater$14
5.8
DetailsBuy
HiTauing Aquarium Heater - 100W Fish Tank HeaterHiTauing Aquarium Heater - 100W Fish Tank Heater$24
5.8
DetailsBuy
DaToo Aquarium Heater Adjustable 50WDaToo Aquarium Heater Adjustable 50W$6
5.7
DetailsBuy
Tetra 26446 HT Submersible Aquarium HeaterTetra 26446 HT Submersible Aquarium Heater$7
5.4
DetailsBuy
Aqueon Pro 300 Submersible Aquarium HeaterAqueon Pro 300 Submersible Aquarium Heater$48
5.4
DetailsBuy
MarineLand Precision Heater for AquariumsMarineLand Precision Heater for Aquariums$13
5.0
DetailsBuy
HITOP Compact Submersible Aquarium Heater - 200WHITOP Compact Submersible Aquarium Heater - 200W$19
4.9
DetailsBuy
Fluval M 200-Watt Submersible Aquarium HeaterFluval M 200-Watt Submersible Aquarium Heater$36
4.8
DetailsBuy
PULACO 25W Small Aquarium Submersible Betta HeaterPULACO 25W Small Aquarium Submersible Betta Heater$9
4.3
DetailsBuy
Aqueon Aquarium Fish Tank Preset HeaterAqueon Aquarium Fish Tank Preset Heater$18
4.1
DetailsBuy
hygger Small Submersible Aquarium Heater 100Whygger Small Submersible Aquarium Heater 100W$22
3.6
DetailsBuy
Orlushy Submersible Aquarium Heater, 150WOrlushy Submersible Aquarium Heater, 150W$19
3.4
DetailsBuy
FREESEA Aquarium Heater for Fish TankFREESEA Aquarium Heater for Fish Tank$27
3.0
DetailsBuy
FREESEA Aquarium Fish Tank Heater 50WFREESEA Aquarium Fish Tank Heater 50W$16
2.6
DetailsBuy

Core Power Plays

The specs and strengths that make it shine.
Preference for adjustable heaters over preset ones
“I've had bad luck with below 50 watt heaters.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Suggestions for adjustable heaters over preset ones
“At this point I am ready to lose it. My fish are freezing and idk what the fuck to do.”➕
Heater placement tips
“Where should I place the water heater?”➕
“Better distribution of heat and you don’t have to worry about unplugging during tank maintenance.”➕
Shopping for reliable heaters is challenging
“Heater recs please!!!! I can't find one that seems reliable lol.”➕
“Man shopping for heaters is the biggest pain in the hobby for me.”➕
Advice on avoiding thermal shock
“This prevent any thermal shock on the glass.”➕
“I'd just recommend getting a replacement just in case the heat damaged any of the internal parts.”➕
Suggestions for better heater practices
“you can get ones that auto-shutoff pretty cheaply now”➕
Challenges with finding reliable small heaters
“most of the small ones i've seen have had questionable reviews, looking for suggestions!”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.
Discussion on heater safety and reliability
“Too aid in never exposing your heater to air lay it sideways in the bottom of the tank in back.”➕
“It's not the best idea to fully trust those to actually shut off.”➕

You May Also Like

Explore more Aquarium Heaters
HITOP 50W Adjustable Aquarium Heater
HITOP 50W Adjustable Aquarium Heater
Explore
Dreyoo 2 Set Aquarium Fish Tank Heater
Dreyoo 2 Set Aquarium Fish Tank Heater
Explore
PULACO 25W Small Aquarium Betta Heater
PULACO 25W Small Aquarium Betta Heater
Explore
Explore more Categories
Portable Bathtubs
Portable Bathtubs for Versatile Bathing & Relaxation
Portable Bathtubs for Versatile Bathing & Relaxation
Explore Portable Bathtubs
Top Hard-Sided Carriers for Cats & Small Pets
Top Hard-Sided Carriers for Cats & Small Pets
Explore