Mars Hydro SP250 LED Grow Light Review

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Mars Hydro SP250 Review – Possibly one of the best?

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mars hydro sp250 review

The first thing I noticed when unboxing the Mars Hydro SP250 was the noticeable increase in weight, If you’ve grown with cheap LEDs before you will know they often don’t weigh much! – this beast of a light weighs 8.5lbs (3.8kg) which is mostly made up from the passively cooled heat sink.

Out of the box, the light feels very sturdy and well made, measuring in at 40 inches long (1m) and 3.5 inches wide (8.9cm) this particular light is only suitable for tents longer/wider than 40 inches.

It’s also good to know that the Mars Hydro SP250 is shipped in a plain, brown box making it 100% discreet.

What’s different about the Mars Hydro SP250?

The technical information they provide is true.

A lot of manufacturers advertise their lights with unrealistic outputs, the first thing I like to do when testing any new light is to first see how my own tests compare against what the seller states, it’s rarely accurate and when it is – It’s refreshing to see!

The Mars Hydro SP250 specifications state that the power output should be 245W give or take 5%, putting the power output between the ranges of 232W and 257W, this is comparable to a 400W HPS.

The SP250 also boasts of a wide spectrum of bright, white light, making it the ideal grow light for both the vegetative and the flowering stage.

Advertised spectrum:
380-410nm, 650-660nm, 730-740nm, 3000-3200k & 6000-6500k

As stated, the power drawn sits comfortably at around 230W and although the light isn’t advertised to be dim-able, there is a mention on the official website that the voltage can be lowered by loosening a screw.

Using my Apagee MQ500 Quantum Power meter, I referenced the charts found on the official website and found them, if anything – understated!, this was really refreshing to see because most sellers almost always overstate their capabilities. It looks like the Mars Hydro SP250 has really made advancements on LED technology and I’m really glad i bought one to review.

Because the technical specification of the Mars Hydro SP250 is accurate, this means that each LED has an efficiency of between 1.95 and 2.30 PPFD per WATT, as a reference; any light with a PPDF of 2.0 or more per WATT is considered highly efficient.

Passively cooled heat-sink lowers the heat output and extends LEDs’ life.
In addition to the highly efficient LEDs, the Mars Hydro SP250 also comes equipped with a fan-less aluminium passive heat-sink, this allows the SP250 to do fantastic job at keeping the LEDs cool without affecting the ambient temperature too much, this heat-sink is silent in comparison to cheaper LED lights that use a fan to disperse heat.

I would recommend that you ensure there is adequate airflow around the heat-sink to be extra cautious, to aid in this the SP250 has vents in and around the chassis of the light to provide a route for air circulation.

IP65 Waterproof:
Perfect for the vegetative stage when the humidity is a little higher! With an IP65 rating, you can be rest assured knowing even ~90% humidity won’t damage the SP250.

Increase Production:
Full spectrum with Infrared, covering a 3x4ft veg space at 24″ whilst covering a 2x4ft flower space at 18″.

Mars Hydro SP250 Technical Specs:

Electrical Efficiency: 2.7umol/Watt
Power Consumption: 232W±5%@AC120V;
Veg Coverage: 3x4ft
Bloom Coverage: 2x4ft
Power Supply: MeanWell EGL-240
Compare to HPS/MH/HID: 400watt
Chip Brand: Epistar
Humidity ≤90%
View Angle of LED: 90°-120°
Work Temperature: -4°F ~128.84°F (-20°C ~ 53.8°C)
Lifespan: 50000 hours
Product Size: 1000mm x 90mm x 80mm

Final Thoughts

In all honesty, I am really impressed by this light, instead of focusing on driving the cost down, Mars Hydro seem to be focusing their energy towards making bigger and better LEDs, and I’m really excited to see what they develop in the future.

This is a bargain light coming it at just under $300.

Author: tgallone