how to calibrate the heater temperature ?

It should come pre-calibrated out of the box. Just plug n play setup.

Will it work in a sump setup?

Yes, it would make a great sump heater.

I have had my 1000w heater in my tank for almost 3 months. Today the controller went dark with a faint flashing light. Does not work what can I do?

Hello, hygger offer one year warranty against any defects, if any problem, please feel free to contact me.

Would 800 watt be too big for 75 galloon tank with 29 gallon sump ? I undertsand it's a lot more than needed but I intend to upgrade to a 180 soon.

I have my 800w in a 75g without any problem. Well, the only thing is, that you must turn it off when doing water change, because at have tank start overheating.

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HG-043-300W

Product ID: 479095175

Details

Brand
hygger
Color
Black
Item Length
10.8 inches
Material
Quartz Nickel
Wattage
300 watts

⚡300W power for 40-80 gal tanks

🌡️±1°F precise digital temp control

🛡️Auto shut-off for overheating & dry run

₨47736

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Keep your tank perfectly cozy without the hassle!

SAFETY FIRST DESIGN - Auto shut-off triggers on overheating or low water levels, protecting your aquatic friends from harm.
DURABLE EXPLOSION PROOF - Crafted with quartz glass and nickel-chromium wire for fast, safe, and long-lasting performance.
PRECISION DIGITAL CONTROL - Adjust temps from 59℉ to 93℉ with ±1°F accuracy via an easy-to-read LED display—no more guesswork or tank dips.
POWERFUL VERSATILE HEATING - 300W heats up to 80 gallons, perfect for both saltwater & freshwater tanks.
COMPLETE SETUP PEACE OF MIND - Includes controller, suction cups, bracket, hook, plus a 12-month warranty—plug, play, and relax.

The hygger Aquarium Heater offers reliable 300W heating for 40-80 gallon tanks with precise digital temperature control and multiple safety features including auto shut-off on overheating or low water. Made from explosion-proof quartz glass and nickel-chromium wire, it ensures fast, safe, and durable performance. Complete with mounting accessories and a 12-month warranty, it’s the smart choice for stress-free aquatic temperature management.

Specifications

ASIN	B0BF49CGLY
Best Sellers Rank	#6,849 in Pet Supplies ( See Top 100 in Pet Supplies ) #7 in Aquarium Heaters
Brand Name	hygger
Color	Black
Customer Reviews	4.2 4.2 out of 5 stars (614)
Included Components	1Heater, 1Controller, 1Controller holder, 3Suction cup, 1*Hook
Item Length	10.8 inches
Item Type Name	aquarium heater
Item Weight	2.2 pounds
Manufacturer	hygger
Material Type	Quartz, Nickel complex, Plastic
Model Number	HG-043
Number of Items	1
Number of Packs	1
Part Number	HG-043
Unit Count	1 Count
Warranty Description	1 year warranty
Wattage	300 watts

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