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Fluval P50 Submersible Aquarium Heater – 50W, Preset 76-78°F for Freshwater & Saltwater Tanks up to 15 Gal, Shatterproof, Fully Submersible, LED Indicator, Durable & Safe Fish Tank Heater

Fluval P50 Submersible Aquarium Heater – 50W, Preset 76-78°F for Freshwater & Saltwater Tanks up to 15 Gal, Shatterproof, Fully Submersible, LED Indicator, Durable & Safe Fish Tank Heater

Q: 50 watt version has hole in front cover? How big is it? Buying so baby nerite can't get into heaterto replace old heater with gaps like that

if your talking about the area around the red lED its small but if worried , i would put a little dab of silicone and let dry. then use . will tank a look and message back

Q: The red light on mine is always on. Is this normal or should it go off when it hits temp? Not finding anything in the instructions.

The red light always stays on. The Fluval seems to be the most reliable out of all the heaters I’ve tried. Hope this helps.

Q: Keeps Turning off and on? Is it because maybe room temp is warm ?

It has an internal thermometer. It turns off when it gets 78°

Q: Will it auto shut off once it reaches temperature?

will shut on and off . unit is preset

Product ID: 252884952

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💧fully submersible & waterproof

🔥50W steady power

🛡️shatterproof polymer housing

Frequently Bought Together

Fluval P50 Submersible Aquarium Heater – 50W, Preset 76-78°F for Freshwater & Saltwater Tanks up to 15 Gal, Shatterproof, Fully Submersible, LED Indicator, Durable & Safe Fish Tank Heater

PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic

API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored

Description

🔥 Keep your aquatic world perfectly cozy—no stress, just success!

INSTANT HEAT STATUS - LED indicator light keeps you in the know when your heater is working hard.
SEAMLESS SUBMERSION - Compact, fully waterproof heater fits discreetly in tanks up to 15 gallons.
EFFORTLESS PRECISION HEATING - Preset 76-78°F ensures perfect tropical tank temps—no fiddling needed.
VERSATILE AQUARIUM ESSENTIAL - Perfect for bettas, shrimp, planted, and reef tanks—consistent warmth for thriving ecosystems.
BUILT TO LAST BUILT FOR SAFETY - Shatterproof polymer design protects your aquatic friends and your investment.

The FluvalP50 is a 50W preset aquarium heater designed for freshwater and saltwater tanks up to 15 gallons. Featuring a shatterproof polymer housing and fully submersible waterproof design, it delivers reliable, consistent heating at 76-78°F. An LED indicator light signals active heating, making it a durable, safe, and hassle-free solution for maintaining optimal aquatic environments.

Have a Question? See What Others Asked

50 watt version has hole in front cover? How big is it? Buying so baby nerite can't get into heaterto replace old heater with gaps like that

The red light on mine is always on. Is this normal or should it go off when it hits temp? Not finding anything in the instructions.

Keeps Turning off and on? Is it because maybe room temp is warm ?

Will it auto shut off once it reaches temperature?

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