H380 Halo II LED Algae Grow Light - Kessil

Click on image to zoom
View full size image

More Views

H380 Halo II LED Algae Grow Light - Kessil

100% Recommend this to a friend (21 of 21)

SKU: 209876
Please wait...
Ships Free Today
14h 57m

365 Day Returns

What's This?

Preferred Reefers
Earn 5% Back

Quick Overview

Growing macro algae in your refugium or sump can help reduce nitrate and phosphate levels in your saltwater tank while providing a safe harbor for micro-fauna to thrive.

The Halo II H380 has been specifically designed to emit a spectrum that will allow algae and other plants to grow to their fullest potential by targeting the wavelengths and spectrum required. The H380 does have the ability to change spectrum, that will allow you to fine tune the lighting for the best growth of your specific type of algae. Allowing faster growth will, therefore, allow the algae to remove more nutrients from the water column.

With the different types of Kessil mounting options, like the gooseneck, mounting the H380 is super easy and can mount on almost any sump or in any location.


Note: Mounting options sold separately.


Ask a question

Product Questions

I have a small separate refugium area with this light over it. I was considering adding a clam, but i was unsure if this type of light would support a clam. Any ideas?
Question by: Daniel on Jan 24, 2017 9:31:00 AM
Hey there! This light is primarily used for algae growth and not for life support for inhabitants like clams. The biggest concern, besides proper life support spectrum, is that the ever growing algae will eventually take over the clam and starve/over crowd it until it dies. I wouldn't advise it. :-)
Answer by: Admin (Admin) on Jan 28, 2017 7:29:00 AM
Do you recommend running light 24/7 (if used for refugium)? If not, I will need a separate timer? Thanks.
Question by: Floyd Fortuin on Jul 1, 2016 12:05:00 PM
We recommend 18 hours of maximum refugium lighting per day. A timer will be a perfect option for this!
Answer by: Connor (Admin) on Jul 1, 2016 12:46:00 PM
Is this available in white by chance?
Question by: Joe on Jul 1, 2016 8:04:00 PM
Right now, Kessil is only offering the black for this model.
Answer by: Valerie W (Admin) on Jul 5, 2016 11:59:00 AM
Does this light provide the spectrum of light needed to help maintain pH stability in the system when the Display tank lights are turned off? Looking for a light that can provide maximum algae growth and pH stability in the system, any suggestions?
Question by: Hunter on Jul 2, 2016 6:45:00 PM
Great question and tough to answer!
In short the light has been used on several of our tanks including the BRS 160 with success in keeping the algae growth constant without major pH swings between day and night. It certainly has worked on our systems but there are several other variable which can impact pH. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jul 6, 2016 12:23:00 PM
Can this light be controlled with the Apex Neptune controller?
Question by: John Bays on Dec 30, 2016 11:25:00 AM
Great question! You will only be able to control the ON/OFF functionality of this light with the Neptune Apex. This does not work with the 0-10V variable speed ports.
Answer by: Randy (Admin) on Jan 9, 2017 8:59:00 PM
How is the intensity/spectrum controlled on this light? I plan to use it as a refugium light as suggested on BRS series but concerned about how close it will be hung (given stand height restriction) vs shallow refugium height.
Question by: Elisabeth Duarte on Apr 17, 2016 2:05:00 AM
Great question!
This light has a single knob to adjust the intensity of the fixture. There is only 2 spectrums included the grow(recommended for algae) and bloom which is strictly used in hydroponics or plant flowering. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 20, 2016 3:19:00 PM
I'm a bit new to the refugium setup within a sump. How would you typically mount a light like this to a refugium within an acrylic sump? Does it come with some kind of mount? Also, do you need to have dark panels separating the refugium from other sections of the sump so algae doesn't grow in the Protein Skimmer and Return sections of the pump? Thanks!
Question by: Mike Sharp on May 23, 2017 1:06:00 PM
The easiest way to mount this light in most setups will be to use the gooseneck mount and clamp to the side of the sump.


Have a great day!
Answer by: Zack (Admin) on May 30, 2017 2:23:00 PM
Controllable (Apex?).
Question by: Luke on Jan 1, 2017 11:54:00 PM
Great question! It is not controllable with the Apex nor the Kessil Spectral Controller.

Answer by: Randy (Admin) on Jan 4, 2017 2:55:00 PM

Full Details

H380 Owners Manual.pdf

Dense Matrix LED Technology

Kessil is a leader when it comes to LED lighting technology. With their Dense Matrix LED's producing a concentrated source of light, and switchable spectrum every wavelength within the spectrum is mixed perfectly allowing even and full growth. The H380 now has 30% more power than its predecessors allowing for deeper penetration and greater efficiency. The one fixture contains two unique full color spectrum blends with enhanced UV light.


Switchable Spectrum

Extreme Purple - Ideal for the growth phase of algae or plants. This spectrum will produce rapid growth while producing a lush, healthier algae. We suggest tuning the H380 closer to this spectrum to allow faster growth and uptake of nutrients.

Extreme Magenta - Targets the bloom stage, driving plants to increase quality and quantity of yield.



Dimensions - 4.5" x 4" (Length x Diameter)

Coverage - 24" surface diameter by 3' penetration (on average)

Power Supply - 100-240V AC (input) 19 VDC,4.74A (output)

Power Consumption - 90w max



Items 1 to 12 of 21 total

  1. 1
  2. /
  3. 2
  • Outstanding! By g5flier on 8/27/2017

    Pricey but what isn't that works? One week after installing this on my 20 gallon refugium and my chaeto growth is amazing, double in size in under a week. Saw Ryan yesterday at MACNA and we talked about the need of a skimmer at all after running this. Watch his video series on refugiums. Results are simply amazing!
  • Wow! By Joseph on 8/18/2017

    I have had this light on my tank almost exactly a week and I am very impressed. My Cheato has literally about doubled in size, just this week. Before I almost couldn't even tell if it had grown on the day to day. Very impressed and happy with this purchase.

    I would highly recommend this light, great quality, great results!
  • KING OF REFUGIUM LIGHTING! By Brandon on 8/11/2017

    This light is amazing! It's only been over my refugium for a week. During that time my baseball sized chaeto has grown to around the size of a soccer ball. Definitely get this light!
  • Awesome light By Jeffrey on 7/31/2017

    Bought this from BRS 2 weeks ago and no joke my chaeto was about the size of a baseball had it under the H80 tuna flora and it wasn't growing now that it's under the 380 it has tripled in size in the past two weeks. Run 24hrs
  • Worth every Penny By David on 7/31/2017

    I must say this light is performing better than expected. I just Installed it last week and have seen a noticeable increase in Chaeto growth. Also I wish I could upload a screen shot to show you my PH graph off my apex. From day one my PH now is a straight line, varying only a tenth from 8.4. Before this I was using a horticulture Par 38 pendent that claimed to be about the same wattage. Chaeto growth very slow and my PH varied from 8.0 at night to 8.4 at about 2pm. Time will tell what effect is on nutrient level but PH stability alone is worth it!
  • Very Effective By Tbone on 7/20/2017

    This light has a noticeable effect on growing and blooming different plants while using little energy and producing very little heat. Spectral switches are user friendly and science/data driven for max effect.
  • Great light By Adam on 5/22/2017

    I've tried several different bulbs over my refugium to grow chaeto and all worked so to speak but nothing has made it grow anywhere close to the rate it does with this light. Worth the price!
  • Works great! By Jan on 4/18/2017

    I've had this lamp glowing purple over my cheato since 4/1/17 (2 weeks) and the growth has really been great. I would estimate that it has grown at least 2 times the size over this period.
    Tremendously better than the $7 HD compact fluorescent I had been using. What really convinced me to drop all of that money on this light (which is expensive) was something Randy on BRS TV said. There was no way that my cheap HD light was able to compete with the 3x250 watt MH bulbs over my display tank. All of the algae was growing in my display and not in the refugium. Now my tumbling ball of cheato is growing beautifully!
    Very happy with my purchase!
  • Expensive but worth it By Robert on 4/18/2017

    Very expensive at $300 but i would highly recommend. This thing grows chaeto extremely fast and im always bringing a 5 gallon bucket full of chaeto to my LFS because there is so much. This light grows a nice soft chaeto as opposed to the other light i had.
  • Unbelievable Light By Alex on 4/10/2017

    Yes the price is expensive for a fuge light, but it pays off! My chaeto has absolutely exploded with growth under this light. It almost quadrupled in size in two weeks!
  • AMAZING-And Worth It By Michael on 3/30/2017

    I know what you're thinking: $300 for a fuge light? I know. I know. I hemmed and hawed before I finally caved, and I'm so glad I did. This is incredible and does everything it claims (and then some). Trust me, if you have chaeto in your fuge, you want this light.
  • Wow what a light! By RobertP on 3/13/2017

    Yeah it is expensive but it is worth it. I had the clip on light wirh a led grow bulb and my chaeto was growing a little but slow. Had this kessil in a week on the same 12 hr schedule and the chaeto doubled. I left it in another week and the chaeto is a thick mat. Great way to export nitrates and phos.