Mars Hydro Par 38 LED Grow Light

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Mars Hydro Par 38 LED Grow Light
MarsHydro 24W PAR 38 LED Grow Light Bulb RED+BLUE New Style for small plants (E26)
  • Buy 2 for US$16.00 each and save 20%
  • Buy 3 for US$15.00 each and save 25%

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MarsHydro 24W PAR 38 LED Grow Light Bulb RED+BLUE New Style for small plants (E26)

Additional Information

Work Temperature-4°F ~105°F (-20°C ~ 40°C)
Spectrum/ Par
Grow Tips

Grow Tip

1.How do I determine the right light for my grow area?

Measure the floor space. Multiply the length times the width and this will give you the square footage. You should be able to get decent results with 30-50 actual watts of power per square foot.

2.For larger areas should I go with a single large panel or multiple medium to small lights?

Using multiple lights allows you to better distribute the intense light in more areas of the grow space instead of having all of the higher intensity light concentrated in only one area while the outer edges never receive intense light.

3.Recommended Hanging Distance Above Plants

Seedling: 24'' Germination: 24''-30'' Veg: 18''-24'' Flower: 12''-18''

4.Here are more tips for grow under our light:

Growth stage, turn Growth switch on. Bloom stage, turn Growth and Bloom switches on.

5.Recommended Lighting Time

Veg: 18/6(on/off) or 20/4(on/off) Flower: 12/12(on/off)

6.Recommended Growing Conditions

The rate of photosynthesis and transpiration are directly affected by temperature, humidity and airflow.

The perfect temperature and humidity for your plants are found between 75°-85°F and 50% - 70% humidity, with plenty of airflow to replenish CO2. PH is 6-6.5. You may add more calcium and magnesium than normally needed.

7.Please Note

The light is not water-proof, so do not use it under water environment.

Light may be too strong, please wear your sunglasses when looking at it.

Some leds seem dim. They are IR. Human eye can not see IR very clearly, but you can wear sunglasses to check.


Product Questions

When will my order be shipped?

Your order will be shipped within 24 business hours after we receive your cleared payment. Local stock in US/Canada/Europe/UK/AU. The delivery will take about 2-7 working days and no custom tax is needed if shipped locally.

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Do you offer warranty on the light?

Yes, we offer warranty on each light of Mars Hydro. If there is any problem about the light, email Mars Hydro service timely and we will help you as soon. or

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Do you know the ETA when the light will be delivered after I place order online?

Yes, we do. As usual, package will be delivered within 2-5 business days in USA or CA, and 3-6 business days in UK or EU. Besides, Mars Hydro service will email you tracking number and link. Also we will track the package timely and email you to pick up the package after it is delivered.

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Customer Reviews 10 item(s)

1-10 of 11

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only lights i use now for small plants/seedlings... no complaints Review by Martin / (Posted on 3/6/2018)
love these par 38 lights ... only lights i use now for small plants and seedlings... no complaints..... could make it a bit better by providing or making available a compatible unit.
starsGreat product Review by sharonton / (Posted on 12/11/2017)
I used this light for my hot chili's and they love it I took them out from under my t8s and they exploded I highly recommend this light..
starsIt is working excellent and I am very pleased with it and the ... Review by Chris / (Posted on 12/11/2017)
The light arrived promptly and was packaged very well to prevent any damage. It is working excellent and I am very pleased with it and the little plant loves it. I would recommend it to anyone.
starsDo. Not. Look. Into. The. Light. Review by Brendan / (Posted on 12/11/2017)
This could be accurately be described as a chunk of aluminum with some LEDs in it. Whoa. Bright. Do. Not. Look. Into. The. Light.

It's about the size of a "regular" flood lamp, maybe a tad smaller. Mounting in a naked clamp lamp seems smart - the can / hood would otherwise prevent the heat vanes from effectively dissipating heat.

Looking forward to positive results.
This unit may be best used for 1-2 small plants Review by Ben / (Posted on 12/11/2017)
I've got this on some young marigolds inside my basement shower. They're not dead but not thriving either. This unit may be best used for 1-2 small plants since the pattern isn't very wide and I'm sure my small group of pots isn't getting the desired intensity of light. My use is kind of pushing the limit.
Fantastic Review by sunshine2562 / (Posted on 12/11/2017)
Fantastic and works even better than i expected. Plants love it.Perfect for about two to three plants in a small spot. It does just the job for my small tomato grow project!
starscrazy bright, seems to work good. Review by rickybobby / (Posted on 12/11/2017)
Crazy bright, don't look into this thing directly. :-P plants.seemmto like it as well. New limbs coming out further down the stalk of an avacod plant I started a year back. Others perked well.
Good light! Review by tim420 / (Posted on 12/11/2017)
This is a good light. The heatsinks are well made but, not really needed - It doesnt get warm at normal room temperature. Actually, its pretty cool to the touch.

Light output is good. At 26" in height, you'll get about an 18" diameter light circle. The fall off is pretty sudden, maybe an inch or two of useable light.

I would say this bulb is good for a single plant or several smaller plants that can fit into the light cone.

Id buy it again. A whole bunch of them would be good for a seedbed, but a full size LED hood would work better.
works great. Review by aaaabbd / (Posted on 12/11/2017)
.Bright LED light, very little heat, works great. I had high hopes for it to work but am truly amazed at how much the plants respond to it leaving no doubt about it working.If you are growing indoors this is what you need
GREAT SUPPLEMENTAL LIGHT Review by JC / (Posted on 11/7/2017)
As promised here's your review. These lights are an excellent choice for anyone looking for supplemental lighting for a great price.
My set up is:
Veg: Mars II 900 growth on 600 watt CFL mixed Kelvins
Flower: Mars II 900 both growth/bloom on, 6 Mars par 38 lights and 400 watts CFL 2700 Kelvin

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