No directions came with my heater....How can I adjust the temp so that it actually sticks?

Use the Button by the outlet side and then press it, it will start to flash press until your at the proper temp then leave it. It will adjust itself

Can i adjust it to set to 78 degrees F for a betta fish?

Dear customer, 78 ℉ is ≈ 26℃ , designed temperature for this heater is 15~34℃，normally, suitable temperature for betta fish is 24~30℃（75~86℉）, we suggest you ask local fish store for more details.

What type of plastic is it made of?

The Plastic is durable, does no appear to be fiberglass filed plastic. How ever the one I purchased is sitting in a box it didn't last much more than a month. an alert message flashed and I removed it as soon as I noticed it. Replaced it with a Cobalt Neo-Therm Heater.

Why is this Heater flashing 00? Tried unplugging and resetting- still does not work.

It flashes till you set the temp you want then it stops. If it keeps flashing then you need to contact seller and send it back.

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FREESEA Adjustable Turtle Tank Heater: Precise Temperature Control 64-95℉ | Deviation of Less 1.8F - Keep 1-10 Gallon 1.5" Shallow Water Turtle Tank Steady & Safe - External Controller Easy to Adjust

Product ID: 52830982

Details

Brand
FREESEA
Color
Submersible
Item Length
3.5 Inches
Material
Glass
Voltage
110 Volts

⚡50W precise heating power

🔒Dual auto shut-off safety system

🌡️Adjustable 63℉-94℉ external controller

Rp892561

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Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌊 Keep your aquatic world perfectly heated — because your fish deserve the best vibe.

SAFETY FIRST DESIGN - Auto shut-off activates if heater is exposed or water exceeds 94℉, protecting your aquatic friends.
REAL TIME LED DISPLAY - Digital temperature readout with error codes keeps you informed at a glance.
RELIABLE 24 7 SUPPORT - FREESEA’s dedicated customer service ensures your tank stays cozy and your worries minimal.
PRECISION HEATING POWER - 50W ensures stable warmth for 1-10 gallon tanks, perfect for bettas and turtles.
CUSTOM TEMPERATURE CONTROL - External controller lets you dial in the perfect aquatic climate from 63℉ to 94℉ with ease.

The FREESEA 50W Aquarium Fish Tank Heater is a compact, submersible device designed for 1-10 gallon freshwater and saltwater tanks. Featuring an external adjustable controller with a temperature range of 63℉ to 94℉, it offers precise climate control. Dual safety protections include automatic shut-off when exposed or overheating above 94℉. The digital LED display provides real-time temperature and error alerts, backed by responsive 24-hour customer support.

Specifications

ASIN	B075PSPCNY
ASIN	B075PSPCNY
Best Sellers Rank	#31,338 in Pet Supplies ( See Top 100 in Pet Supplies ) #53 in Aquarium Heaters
Brand Name	FREESEA
Color	Submersible Heater with External Controller
Customer Reviews	4.3 4.3 out of 5 stars (7,499)
Date First Available	September 17, 2017
Is Discontinued By Manufacturer	No
Item Length	3.5 Inches
Item model number	FS28-50W
Manufacturer	FREESEA
Manufacturer	FREESEA
Material Type	Glass
Model Number	FS28-50W
Part Number	4334822537
Product Dimensions	2.5 x 1.5 x 3.5 inches; 8.15 ounces
UPC	722970219243
Unit Count	1 Count
Voltage	110 Volts
Wattage	50 watts

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Rp892561

Duties & taxes included

In stock

Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Indonesia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great experience from order to delivery. Highly recommended!

1 week ago

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