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    Home / PhytoMAX-4 LED Grow Lights
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    PhytoMAX-4 LED Grow Lights

    PhytoMAX-4 LED Grow lights offer the same legendary Black Dog LED PhytoMAX performance and quality, at a price we've never been able to offer before!

    PhytoMAX-4 comes in 7 different sizes to suit the needs of your grow area:

    PhytoMAX-4 24S

    PhytoMAX-4 24S

    1500W, 3188 μmol/s

    PhytoMAX-4 20S

    PhytoMAX-4 20S

    1250W, 2657 μmol/s

    PhytoMAX-4 16S

    PhytoMAX-4 16S

    1000W, 2125 μmol/s

    PhytoMAX-4 12S

    PhytoMAX-4 12S

    750W, 1594 μmol/s

    PhytoMAX-4 8S

    PhytoMAX-4 8S

    500W, 1063 μmol/s

    PhytoMAX-4 4S

    PhytoMAX-4 4S

    250W, 531 μmol/s

    PhytoMAX-4 2S

    PhytoMAX-4 2S

    125W, 266 μmol/s


    Which PhytoMAX-4 light is right for you?

    PBFD / DLI Calculator

    Please enter the size area you want to grow in, or the size footprint you're looking for each light to cover:

    Length:
    Width:
    Running hours per day

    Footprint area:
    Light Model Hanging Height (inches) Average PBFD (μmol/m2/s)
    PhytoMAX-4 2S - -
    PhytoMAX-4 4S - -
    PhytoMAX-4 8S - -
    PhytoMAX-4 12S - -
    PhytoMAX-4 16S - -
    PhytoMAX-4 20S - -
    PhytoMAX-4 24S - -

    Hanging height is the height the light needs to be hung above the average top of the canopy to allow the light to spread out and cover the footprint you specified, and does not vary with the light model. For larger areas, using muliple smaller lights (each with a smaller footprint) reduces the required hanging height. PhytoMAX-4 lights can be flush-mounted to the ceiling and are only 4.5" / 11cm thick.

    The PBFD levels given are the average for every square inch of the footprint you specify. All light intensity calculations assume reasonably-reflective walls around the footprint and/or adjacent lights on identical footprints. This calculator is intended to guide you to the right size light for your situation, but we're always here to help- you can always contact us for advice.

    We have custom, proprietary light modeling software that can show you guaranteed light intensity levels for every square inch of your growing area, or even every cubic inch from top to bottom. Contact us through email or phone or schedule a large-project consultation.


    Recommended PBFD Ranges

    The ranges given below are guidelines based on our years of experience. You can go lower or higher in some circumstances; you can always contact us if you want to talk about unusual set-ups.

    The "Min" light level is the minimum we would think you would be happy with for decent results; "Typical" is what we would generally recommend and "Max" is on the higher end of what we would recommend. PhytoMAX-4 lights can be dimmed, so you can always get a bit more power than you need and experiment.

    Recommended μmol/m2/s PBFD
    Growth Stage Min Typical Max
    Cloning 50 75 - 100 150
    Seedlings 200 300 - 600 700
    Vegetative 200 300 - 600 800
    Flower-
    12 hrs/day
    No CO2
    350 600 - 750 950
    Flower-
    12 hrs/day
    With CO2
    800 900 - 1300 1800
    Flower-
    12 hrs/day
    With CO2
    Extreme
    1200 1500 - 1800 2500 **
    Flower-
    20 hrs/day (autoflower)
    No CO2
    200 350 - 450 600
    Flower-
    20 hrs/day (autoflower)
    With CO2
    450 600 - 775 1000

    ** This light level is only recommended for experimentation or research purposes- it is not recommended for a production facility. Driving plants with that much light requires a lot of attention to fertilization, CO2 and environmental conditions- it is much more likely that something will go wrong and cause complete crop loss. We've tested light levels like this ourselves- which is why we don't recommend it in general, though we did get 137 grams/ft2 for a 6' X 6' area at 2200 μmol/m2/s PBFD. PhytoMAX-4's unique design can deliver even higher light levels if you desire to really push limits, but we haven't seen any practical benefit yet.


    SP, SC and SX Models

    The only difference between the three models is the power cord and the voltage they can handle.

    SP model IEC power cord: SC model locking, water-tight power cord:
    SP model IEC power cord SC model power cord
    Rated for 100-250 Volts
    Not recommended for greenhouse use
    Rated for 100-277 Volts
    (including one leg of 480V 3-phase)
    Locking, water-tight connection
    SX model locking, water-tight power cord:
    SX model power cord
    Rated for 347 Volts
    (one leg of 600V 3-phase power)
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    Black Dog LED

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    • Light Measurements / Comparing Lights
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    Black Dog LED

    1120 Delaware Ave.
    Longmont, CO 80501

    720-420-1209
    800-380-2291
    Office Hours:
    M-F: 9 am - 5 pm
    M-F: After 5 By Appointment
    Sat - Sun: By Appointment

    Products
    • PhytoMAX-4 Grow Lights
    • Accessories
    Our Technology
    • Unique Science Based Spectrum
    • Superior Yields
    • Case Studies / Testimonials
    • Leaf Surface Temperature
    Education
    • Home Growing
    • Commercial Growing
    • Spectrum / Color
    • Light Measurements / Comparing Lights
    • Product Design
    • Deployment / Installation
    • All Categories
    Quick Resources
    • Growing 101
    • Galleries
    • Growing Calculators
    Black Dog LED

    1120 Delaware Ave.
    Longmont, CO 80501

    720-420-1209
    800-380-2291
    Office Hours:
    M-F: 9 am - 5 pm
    M-F: After 5 By Appointment
    Sat - Sun: By Appointment

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