ABI 25W Deep Red 660nm Flowering Bloom Booster Review

Editor rating

4.5/5 on July 21, 2017

User's rating

202 reviews


  • Has high-grade LED chips.
  • 50,000 hours life-span.
  • Energy-efficient supplemental grow lamp.
  • Easy to install.
  • Produces 660-nm deep-red light.
  • Reliable.
  • 36-months warranty.


  • Cannot light during power blackouts.
  • Wrong use can cause foliage discoloration.


ABI GR-PAR38-25W-DR is a 25-watt power-efficient supplemental LED-based grow bulb with a low heat signature that is designed to emit a 660-nm deep-red light that sustains crops through their bloom and flowering phases of development.

ABI GR-PAR38-25W-DR is a 25-watt power-efficient supplemental LED-based grow bulb designed to emit a 660-nm deep-red light. It is built as a low heat output unit that incorporates safety features to avert any circuit burn out due to internal circuitry overheating.

It is designed to be used as a supplemental light for crops going through the fruiting or flowering phase of their developmental cycle. This product has its advantages and disadvantages which are highlighted below, alongside a verdict. Thereafter is an ABI-25W Deep-Red 660nm Flowering-Bloom Booster Review.

Overview of ABI GR-PAR38-25W-DR features

ABI GR-PAR38-25W-DR is a durable 25-watt power-efficient supplemental grow bulb designed to sustain plant growth during the blooming and flowering stages of crop development. It features an ultra-efficient cooling system that uses an integrated quiet fan that rotates around a hub lubricated by ball-bearings. This bulb is designed and built by ABI, and its model number is equivalent to its part number, and this value is GR-PAR38-25W-DR.

This bulb weighs 15 ounces and has a diameter of 4.96 inches while its height is 4.8 inches. It is designed to fit into a standard E-26 lamp-holder. Its LED panel features 18 high-quality LED chips that are collectively oriented to produce light at a beam angle of 60 degrees. Each of these chips can consume a maximum power of 3 watts, and the theoretical maximum power consumption of this unit is 54 watts. However, in real use, it draws only 25 watts of power at full glow hence testifying to its power-efficient design.

This model can be powered by AC power whose voltage is in the range of between 100volts to 240volts. The current needed to power its drive unit is 540 milliamperes. This drive ensures that the LED chips receive the right amount of power so that they can emit a light of a specific wavelength.


ABI GR-PAR38-25W-DR is compact in size and it fits standard bulb socket.

The deep-reed light emitted by this bulb has a wavelength of 660 nanometers. This wavelength is the approximate absorbance maxima for the photosynthetic component, chlorophyll A. This means that almost all the emitted light is fully absorbed by the crop leaves, and this increases the photosynthetic activity in these plants, especially for those in the bloom phase of crop development. Consequently, bud growth is not only accelerated, but it is also prioritized so that large buds develop and this degree of bud growth lead to the development of super-healthy flowers.

The lifespan of this LED-based bulb is 50,000hours.

For what kind of use this is suitable for?

This grow bulb is suitable for horticulturists, indoor gardeners, and plant breeders who require a supplemental light to boost the development of their crops during the bloom to flowering phases of development.

How PAR38-25W model works?

ABI GR-PAR38-25W-DR is a power-efficient energy transducer. It takes electrical energy and converts it to 660-nm light energy. Its LED chips perform this energy transduction process.

Price-Benefit Assessment

Product’s pocket-friendly price-tag that favors end-consumers who benefit by acquiring a high-quality, durable, and easy-to-use power-efficient grow light at a cheap price.

What customers say about the product?

Most customers rate it as a dependable, high-quality product. Others value its high-performance while others appreciate it as an affordable power-efficient product.

What kind of guarantee manufacturer gives?

ABI GR-PAR38-25W-DR benefits from a 36-months/3-year warranty.

Final Recommendation

ABI GR-PAR38-25W-DR is a well-designed and dependable 25-watt energy-efficient supplemental LED-based grow bulb designed to emit a 660-nm deep-red light that can sustain crops through their bloom and flowering phases of development. If you are looking for a powerful supplemental light to boost your crops through their bloom and flowering stages of development, you must consider acquiring ABI GR-PAR38-25W-DR.

Hopefully, you found this review helpful. If you have any questions or comments, please post them below, thank you! You can find more LED grow light reviews and information about growing plants utilizing plant lights.

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