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Celebrating 60 years and still family run

Product code: 14884
Out of stock

Fluval T300 Heater

Regular price £2699


Order before 1pm for next working day delivery


Keep your aquarium at the perfect temperature with this reliable and high-performance 300-watt heater. Designed for tanks up to 300 litres, it delivers exceptional accuracy, consistent warming and dependable long-term performance. Ideal for both freshwater and marine aquariums, with built-in safety features for total peace of mind.

Key Features

  • 300-watt heater suitable for aquariums up to 300 L
  • Advanced electronic construction ensures superior accuracy, stability and long-term performance
  • 24/7 temperature monitoring regulates heat output and prevents unsafe fluctuations
  • 360° indicator light ring clearly displays heating status
    • RED = actively heating
    • BLUE = desired temperature reached
  • Automatic dry-run protection switches off power if the heater is not fully submerged
  • Protective Heater Guard reduces risk of breakage and improves safety
  • Large, easy-grip temperature dial adjusts from 22–32°C / 72–90°F
  • Fully submersible design for flexible positioning — vertical or horizontal installation
  • For aquarium use only
  • Use caution around saltwater systems when operating electrical equipment

Delivery

We offer free DPD next working day delivery to all UK mainland online orders over £49. For orders under £49, a flat fee of £5.99 applies.

For orders to the Channel Islands, Isle of Man, Scottish Highlands, and Scilly Isles, DPD provides a two-working day delivery service, and additional shipping charges may apply at checkout.

Please note: We currently do not ship to Northern Ireland.

Selected items that are not available to order online may be available for local delivery at an extra charge.

Orders placed before 1pm Monday to Friday are dispatched the same day, subject to stock availability.

Click & Collect

We offer free store collection at our Wirral store, with orders ready for collection in as little as 15 minutes, depending on stock availability. If the item is not available at the Wirral store, you can choose to place the order on hold till stock arrives.

Please note that your order will be held for 7 days. Any orders not collected within this period will be automatically cancelled and refunded in full.

Returns & Refunds

We offer a FREE 60-day returns policy. To start your return, simply give us a call on 0151 336 3616 or initiate your return through our returns portal

For our full returns policy click here

Need advice?

Call and speak to a human expert on 0151 336 3616

Payment & Security

Payment methods

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  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.