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

Window & Door Seal Lubricants

Hood Scoops & Vents

Horns & Accessories

Ignition & Electrical

Interior

Interior Care

Jump Starters, Battery Chargers & Portable Power

Lighting & Electrical

Mirrors & Parts

Plumbing

Pullers

Puller Sets

Running Boards & Steps

Safety

Shocks, Struts & Suspension

Snow & Ice

Ice Scrapers & Snow Brushes

Steering & Suspension Tools

Thread Repair Kits

Spark Plug Thread Repair Kits

Tires

Tools & Equipment

Detailing Tools

Towing Products & Winches

Trailer Accessories

Stabilizer Jacks

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

Headsets

Wearable Technology

health & household

Baby & Child Care

Health Care

House Supplies

Oral Care

Personal Care

Sexual Wellness

Sports Nutrition

Testosterone Boosters

Wellness & Relaxation

home & kitchen

Bath

Bedding

Heating, Cooling & Air Quality

Kitchen & Dining

Lighting & Ceiling Fans

Seasonal Decor

Outdoor Nativity Scenes

Storage & Organization

Vacuums & Floor Care

office products

Educational Supplies

Angled Paintbrushes

Office & School Supplies

patio, lawn & garden

Gardening & Lawn Care

Outdoor Decor

Outdoor Heating & Cooling

Outdoor Lighting

Outdoor Power Tools

Patio Furniture & Accessories

Decorative Pillows

Pest Control

Foggers

pet supplies

Birds

Cats

Dogs

Fish & Aquatic Pets

Horses

Reptiles & Amphibians

toys & games

Arts & Crafts

Collectible Toys

Dolls & Accessories

Strollers

Dress Up & Pretend Play

Games & Accessories

Kids' Electronics

Puppets & Puppet Theaters

Hand Puppets

Puzzles

Remote & App Controlled Vehicles & Parts

Cars

Sports & Outdoor Play

Stuffed Animals & Plush Toys

Tricycles, Scooters & Wagons

Vehicles

HITOP-Fish Hitop 100W Adjustable Aquarium Heater

Curated from 83 real Reddit conversations

Refreshed on: February 12, 2025

HITOP-Fish Hitop 100W Adjustable Aquarium Heater

Brand: HITOP-Fish

Price: $14

Snoop Score:

5.8

Sentiment

5.2

Popularity

5.1

Technical

5.7

Buy on Amazon for $14 See All Aquarium Heaters Reviews

As an Amazon Associate, I earn from qualifying purchases.

Snoop's Take

The Hitop 100W Adjustable Aquarium Heater is a submersible glass water heater designed to maintain optimal temperatures for fish tanks ranging from 10 to 30 gallons. With its explosion-proof glass and adjustable temperature settings from 68°F to 93°F, it aims to provide a safe and efficient heating solution for both freshwater and saltwater aquariums. Consumer feedback highlights the heater's effectiveness, with many users noting its reliability in maintaining a consistent temperature. One user mentioned, "it has been keeping my tank at a steady 76 degrees reliably," reflecting the general sentiment that the adjustable feature enhances temperature control and mitigates risks associated with fixed heaters. However, some users raised concerns about overheating and inaccurate readings, stating, "the thermometer says 76F, but the heater thinks it’s 80F and is not heating." Overall, the Hitop 100W Adjustable Aquarium Heater is recommended for those seeking a reliable heating solution for their aquariums, provided that users are cautious about its operation and ensure it remains submerged to prevent malfunctions. While there are some negative reviews regarding temperature accuracy and safety, the majority of feedback indicates satisfaction with its performance for maintaining stable water temperatures.

Not for you? Check out our other rated Aquarium Heaters

this is the one I bought it’s 50watts but I think a 5gal 25watts is fine.
Positive Feedback

It felt like touching a light bulb.
Negative Feedback

5.8

HITOP-Fish Hitop 100W Adjustable Aquarium Heater

Buy on Amazon for $14

Freshwater Aquariums

5 / 10

Saltwater Aquariums

6 / 10

Marine Life Habitats

5 / 10

Small to Medium Tanks

5 / 10

See how this compares to all Aquarium Heaters

What it does well!

Key strengths users can’t stop talking about.

Adjustable temperature feature is beneficial

“this is the one I bought it’s 50watts but I think a 5gal 25watts is fine.”➕

“Get an adjustable heater so you can control the heater temperature.”➕

“Keep in mind a 25W heater can make fish soup out of the tank very quickly if it decides to fail.”➕

“It has been keeping my tank at a steady 76 degrees reliably, turning on and off as needed.”➕

Consistent temperature control

“they've been running well and keeping it at a consistent temp.”➕

Reliable heater for smaller tanks

“I love them sm :,)”➕

Reliable heater for multiple tank sizes

“I know that heaters just fail sometimes and can be pretty unreliable but thought this one looked ok.”➕

“I haven't had any real issues with it, so I would recommend.”➕

“No issues, they’re great.”➕

Heater provides consistent temperature control

“I bought an Aqueon aquatic flat heater, 7.5 watts. But after a month, it doesn't seem to keep the tank warm.”➕

“If I could give you an award I would 🥰! It seems like a small drop to us but it can really stress your betta out.”➕

Reliable steady temperature control

“I’m terrified of accidentally boiling my fish with a bad heater.”➕

Adjustable heaters provide better temperature control

“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 and easier to keep it at the temperature you need!”➕

Even 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.”➕

Where it needs some work!

Areas to watch—feedback on possible improvements.

Heater can become very hot to the touch

“It felt like touching a light bulb.”➕

“Yes its supposed to be that hot.”➕

Risk of overheating or breaking when used outside water

“DO NOT TURN IT ON OUTSIDE OF THE WATER. Your heater needs to be in the water to be safely turned on.”➕

Risk of overheating

“the temperature has been so inconsistent! I cannot keep my tank at a stable temp for the life of me.”➕

Risk of heater melting and causing damage

“DO NOT BUY!!! The one I had on my tank melted and ended up cracking the glass of our tank.”➕

Inaccurate temperature settings reported

“I put it in my tank and “set” it to 74 but the other thermometer I have inside says it’s only 68.”➕

Preset heaters often have inaccurate temperature readings

“The thermometer says 76F, but the heater thinks it’s 80F and is not heating.”➕

“It was supposed to be adjustable, but the thermometer was way off and when it said it was heating, it was actually not.”➕

Risk of overheating when not properly submerged

“I accidently forgot to turn mine off once when it was vertical during a water change, the water level got too low and the heater started smoking!”➕

Risk of heater malfunction leading to fish death

“Entire tank lost due to heater malfunction... The fish were cooked in less than 8 hours.”➕

“Heaters typically fail in one of two ways; On or Off.”➕

“They broke and over heated and luckily I caught it just in time.”➕

“I had fish soup by breakfast.”➕

Compare On All Talked About Dimensions

Product Name	Price	Score	See Details	Buy Now
AQQA Aquarium Heater 500W for 66-135 Gallon Fish Tanks	$25	7.3	Details	Buy
Fluval E 300 Watt Electronic Heater	$34	7.2	Details	Buy
HITOP 50W Adjustable Aquarium Heater	$11	7.1	Details	Buy
HiTauing Aquarium Heater - Submersible Fish Tank Heater	$37	6.8	Details	Buy
hygger Aquarium Heater with Digital LED Controller	$43	6.5	Details	Buy
Aqueon Submersible Aquatic Flat Heater 15 Watts	$7	6.5	Details	Buy
Dreyoo 2 Set Aquarium Fish Tank Heater	$23	6.0	Details	Buy
HITOP-Fish Hitop 100W Adjustable Aquarium Heater	$14	5.8	Details	Buy
HiTauing Aquarium Heater - 100W Fish Tank Heater	$24	5.8	Details	Buy
DaToo Aquarium Heater Adjustable 50W	$6	5.7	Details	Buy
Tetra 26446 HT Submersible Aquarium Heater	$7	5.4	Details	Buy
Aqueon Pro 300 Submersible Aquarium Heater	$48	5.4	Details	Buy
MarineLand Precision Heater for Aquariums	$13	5.0	Details	Buy
HITOP Compact Submersible Aquarium Heater - 200W	$19	4.9	Details	Buy
Fluval M 200-Watt Submersible Aquarium Heater	$36	4.8	Details	Buy
PULACO 25W Small Aquarium Submersible Betta Heater	$9	4.3	Details	Buy
Aqueon Aquarium Fish Tank Preset Heater	$18	4.1	Details	Buy
hygger Small Submersible Aquarium Heater 100W	$22	3.6	Details	Buy
Orlushy Submersible Aquarium Heater, 150W	$19	3.4	Details	Buy
FREESEA Aquarium Heater for Fish Tank	$27	3.0	Details	Buy
FREESEA Aquarium Fish Tank Heater 50W	$16	2.6	Details	Buy

Core Power Plays

The specs and strengths that make it shine.

Discussion about reliable heater wattages for different tank sizes

“I had a HITOP brand heater in my 10 gallon for a few years that worked pretty well.”➕

Discussion of adjustable heater preferences

“I’d like recommendations on a high quality adjustable heater.”➕

“The Petsmart brand (Top Fin) is the best of the generics IMO.”➕

“I’m fond of fluval brand, so I’ll go with that.”➕

“HITOP Aquarium PTC Heater with Controller: 200W 300W 400W Digital Heater for Fish Tank.”➕

General discussion on various heater brands and models

“I recommend, I use them in my other tanks now also.”➕

“Yeah I started using Eheim heaters myself and have them in 4 of my tanks and no complaints in the last 9 months or so I’ve been using them.”➕

Users share experiences with different brands of heaters

“In my reef tank it is the only way to go.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’

Discussion of alternative aquarium heater brands and models

“Thanks, the choices were many.”➕

“Mine just saved my whole 40g from a busted heater.”➕

“It's been super reliable for 4 years now.”➕

Discussion about safe operation of aquarium heaters

“I don’t think you’re supposed to run most aquarium heaters dry.”➕

“Establishing a nitrogen cycle is an important part of keeping your fish healthy.”➕

New users should follow care guidelines for betta fish

“Establishing a nitrogen cycle is an important part of keeping your fish healthy.”➕

Discussion about the necessity of additional temperature controllers

“I bought a tank heater but is it necessary to buy a temperature controller?”➕

“I don’t mess with the additional temperature controller as it introduces a single point of failure.”➕

“If I had some Livebearers - low quality, short-lived, I'd be happy without redundancies.”➕

“To me step zero is to always just have a spare heater.”➕

Concerns about heater compatibility with smaller tanks

“I just don't want to accidentally cook my sweet (angry) guy.”➕

Discussion about heater wattages for small tanks

“Peace of mind costs money.”➕

Discussion about best practices for new betta fish owners

“Establishing a nitrogen cycle is an important part of keeping your fish healthy.”➕

Discussion about heater placement for optimal performance

“Where should I place the water heater? No text content”➕

“Better distribution of heat and you don’t have to worry about unplugging during tank maintenance.”➕

Discussion on the importance of proper installation for heater performance

“90% of the reason people's heaters die is because they didn't install them properly.”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.

Concerns about aquarium heaters catching fire or malfunctioning

“Reviews on Amazon of breaking, catching fire an cooking pets. Recent reviews on Amzon are a nightmare.”➕

“I recently went down this rabbit hole and did some research. Reviews will generally be weighted tow”➕

“For 15 years this is the only heater I have ever fully trusted.”➕

Concerns about heater reliability over time

“Eheim is like peak reliability. But they can still fail ~~catastrophically~~ like all heaters.”➕

Users discuss reliability and redundancy with heaters

“I absolutely love it and would never buy another temp controller without those features as a minimum.”➕

Discussion about heater reliability issues across different brands

“None of my heaters work. Literally none.”➕

“What do you mean by "stop working within 30 minutes"?”➕

“Most if not all heaters run on either a timer or turn off automatically once the water reaches a certain temperature.”➕

“The water wasn't circulating enough in the area so it turned off constantly.”➕

Concerns about reliability of aquarium heaters

“I just want a reliable heater that won’t short out or end up boiling my fish.”➕

“New versions of Jager and Theo didn't kept temperature below 83F even on lowest settings, when old versions of the same brands worked well.”➕