Item Name
HL-388 Explosion-Proof and Led Display Heater

Easy To Read LED Temperature – Built in with LED read out Fahrenheit display that makes reading the temperature easy or display an Error code if there are any problem with the temperature and sensor.

Adjustable Temperature External Setting - Simply submerge the heating element under the water and use external temperature controller adjust your temperature setting 68℉ to 94℉ or 20℃ to 34℃.

Auto-Off Power When leaving Water-After being taken from fish tank, it will stop heating immediately, then showing E1 at the same time.

The waterproof of the aquarium heater is IP68, which must be submersible when using.

Cause the quartz, the products are suitable for freshwater and saltwater.

The product adopts hollow design and the temperature is more precise. its temperature error is just 1℃.

Smaller size makes the product take up less space, the length is just 12cm/4.7inch, the width is 6cm/2.4inch, but the maximum power of the product can reach 300W.

The heating rod is explosion-proof for the super-hard quartz, not normal glass.

The heater works as Ladder-type, energy saving.

Please ensure that local voltage and product voltage are consistent.

Do not use this product for other purpose than specified use.

Do not use the appliance that not provided by manufacturer, it might be harmful to product and person.

Please ensure your hands are dry to turn on or turn off the power.

When the product breaks down, please cut off the power immediately.

If you have any questions about the installation or safety of the product, you can consult the local qualified electrician.


Please do not put your hands into the water in the fish tank before turning off all the power supply in the tank.

Please clean the heater or the tank within 15-20 minutes after power off for cooling to avoid burn.

Do not use detergents, solutions, acidic liquids and other cleaning appliances.

Please keep the child or person under disability away from the product. Don't let child play the product as a toy.

The heater must be completely submerged or can't be used outside the water. Do not place the heater under the gravel. This will restrain the distribution of heat. Place the heater horizontally at the bottom of the aquarium (above the gravel) where water circulates freely. Using a water pump to create water circulation is recommended.


Please pay attention to the change of the water temperature for the first application within one week.

Please read the instructions carefully before using.

Q1. Can I have a sample order for aquarium Water heater?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.

Q2. What about the lead time?
A:Sample needs 3-5 days, mass production time needs 1-2 weeks for order quantity more than

Q3. Do you have any MOQ limit for aquarium Water heater order?
A: Low MOQ, 1pc for sample checking is available

Q4. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional.

Q5. How to make an order for aquarium Water heater?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We arrange the production.

Q6. Is it OK to print my LOGO on aquarium Water heater product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.

Q7: Do you offer guarantee for the products?
A: Yes, we offer 2-5 years warranty to our products.

Q8: How to deal with the faulty?
A: Firstly, Our products are produced in strict quality control system and the defective rate will be less
than 0.2%.Secondly, during the guarantee period, we will send new lights with new order for small quantity. For defective batch products, we will repair them and resend them to you or we can discuss the solution including re-call according to real situation.

1. Your inquiry related to our products or prices will be replied in 24 hours.

2. Well- traded and experienced staffs to answer all you r inquiries in fluent English.

3. Any your customized lightings we can help you to design and put into product.

4. Monthly output over 20000 pcs.

5. Single package in blister or colorful box.

6. Sample order in small quantity is acceptable.