Fortis BYD 720W LED in practical testing - experiences from professional cultivation

Published on 03.03.2026 from Redaktion hanfplatz

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After unboxing the Fortis BYD 720W LED, we put the lamp through a real stress test. A professional farmer licensed for industrial and CBD hemp in Austria tested the LED in his rotary growing system. Here are his honest experiences after 1.5 complete cycles.

The test setup: Professional cultivation with a rotating system

Our tester uses a rotating grow system where plants at different growth stages are constantly under the light simultaneously. Everything from week 1 to harvest is included. The Fortis BYD is running right next to a Sanlight lamp, allowing for a direct comparison.

A special feature of the test: The lamp was changed in the middle of flowering, so that some plants completed their entire cycle under the Fortis BYD, while others were only partially illuminated by it.

First impression: Solid performance with a learning curve

The conclusion after the first few weeks: The Fortis BYD 720W LED delivers solid performance in professional use. However, it takes some experience to find the optimal settings.

Finding the right power setting

Finding the right dimming level was a challenge due to the rotating system with plants at different stages of growth. The result after several weeks of fine-tuning: 50% power is the sweet spot for mixed crops.

💡 Important tip from the pro: Don't start too ambitiously! At 80% power, some plants immediately suffered slight light burns. The lamp is very powerful, so it's best to start cautiously.

Strengths and weaknesses in practical application

✅ That's convincing

Enormous light output: Even at 50%, it is more than sufficient for dense stands.
Even lighting: No hot spots, all plants receive enough light.
Stepless dimming: Precise adjustment to different growth phases is possible.
Price-performance ratio: Competitive compared to the significantly more expensive Sanlight.

⚠️ Pay attention to this

No soft start: Lack of current limiting when switching on (more on this below)
Noticeable heat generation: Perfect in winter, potentially problematic in summer
PAR meter recommended: Without a meter, it's difficult to find the optimal intensity.

The soft-start problem: Important to know!

A clear difference compared to its Sanlight competitors: The Fortis BYD lacks a dimming function (current limiting). Upon switching on, the lamp immediately draws full power, which caused two timers to fail in our test.

Solution: Either use a robust timer with a higher current rating or switch the lamp on and off manually. Given the price advantage compared to premium manufacturers, this is an acceptable drawback if you are aware of it beforehand and prepare accordingly.

Heat management: Consider the season

The BYD Fortis generates noticeable heat through its passive cooling system. For our tester, this is a welcome side effect in winter, as he tends to struggle with excessively cold temperatures.

Concerns for summer: Higher outdoor temperatures could cause heat radiation to become a problem. It might then be necessary to increase the distance to the plants or further reduce the output. A final assessment can only be made after a full year's cycle.

Comparison with Sanlight: How does the Fortis BYD perform?

In our test setup, the Fortis BYD is running directly next to a Sanlight lamp. Both systems illuminate the same room, allowing for a direct comparison.

Previous observations:

The light output is comparable; both lamps deliver excellent results.
Sanlight scores points with its soft-start function and potentially more efficient heat dissipation.
Fortis BYD impresses with a significantly lower price and similar performance.
A PAR meter would be needed for a true comparison of power consumption at the same output.

💡 Pro tip: Anyone serious about LED growing should invest in a PAR meter (PPFD measurement). Without accurate light intensity measurement, you're working by guesswork and missing out on potential or risking light burns.

Interim conclusion after 1.5 rounds

The Fortis BYD 720W LED is a solid grow light for professional use. It delivers the promised performance and can compete with significantly more expensive premium manufacturers.

Who is this lamp suitable for?

✅ Growers who prioritize value for money over absolute premium features
✅ Professional users who can experiment with dimming and distances
✅ Indoor setups with good temperature control
✅ Anyone who is ready to find the right power setting (50% is a good starting point)

Less suitable for:

❌ Complete beginners with no way to measure light levels
❌ Setups with weak timer infrastructure (soft start missing)
❌ Very warm rooms without additional cooling

Our tester: A professional farmer licensed for industrial hemp and CBD hemp in Austria. Several years of experience in indoor cultivation with various lighting systems.

Conclusion: Recommended with minor limitations

The Fortis BYD 720W LED has proven itself to be a powerful and reliable grow light in professional practical testing. The lack of a soft-start function and the noticeable heat generation are points to be aware of, but with proper preparation, they are not deal-breakers.

For the price, you get a lamp that can compete with significantly more expensive premium models. If you're willing to invest some time in finding the optimal settings and pay attention to the aforementioned features, you'll get excellent value for your money.

👉 More information and ordering: Fortis BYD 720W LED at Indras Planet

📺 Missed the unboxing? Click here for a first impression with video.

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Editor: Redaktion hanfplatz

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