MARS HYDRO FC-E4800 Smart LED Grow Light 4x4ft Full Spectrum Grow Light Bar with 2646pcs Diodes 480Watt Plant Growing Light Dimmable Commercial Grow Lamp Daisy Chain Detachable,Achieve 2.8 umol/J

Great light just set up and plug in and off we grow

Nice looking light. Super bright. Unfortunately the power switch and dimmer failed after a few days of use. Contacted customer support by email and their website contact form m, but haven’t heard back from them yet. Update. Customer service got back to me. Turns out total user error (that’s me). There’s a dimmer switch on the back of the control box. I must have bumped it while adjusting the driver/control box location. Flip that switch and all is back to normal. Customer service contacted me by email and nicely explained my error within 48 hours.

So I have bought a couple of dozen grow lights and influenced the buying decision for a charity that bought in bulk from Mars Hydro. This is a good light that performs well. On this model I actually had a problem with the light and I contacted Mars Hydro. They troubleshooted the light with me and when it could not be fixed replaced it. They only required a small payment for shipping the new light. This light had operated in a harsher environment in a greenhouse than many of my other lights. I have found that the Mars Hydro SP3000 lights are more stable in harsher conditions and none of them have failed. They only required a small payment for shipping the new light! What I like best about this Mars Hydro light is the very even coverage I get over a large area. If you want a light with product support, this is a great choice.

DO NOT BUY !!!! I had a Mars Hydro FC6500 in use for just about 2 years. The other day the dimmer failed. I'm no longer able to adjust the intensity. It's either almost no light at all, or the light of the sun in your face. It's taken 5 days of emails with customer service in China to tell me that I can pay $420 for a new lamp right away, or I can pay $20 and wait 2 months for them to ship me a new driver for the lamp. They asked for my personal information as well as PayPal information. It seems all too much like a scam to me. Don't buy from this company. At least buy from one that has customer service here in the USA. Will not buy from Mars Hydro Again !!!

Insanely bright. I describe it as sunlight. Really good for wattage, getting the sp3000 for veg tent now Update. Plants in 1 gallon pots 11/4 Transplantes 11/5 in 5 gallons 11/11 they are exploding with growth under the fc6500! Iv been trying to dial in how much light they need in my 4.5x4.5 grow tent. Iv upped it to the hash mark just under 75% so far at 22 inches from the top of my canopy with no burning. All I can say is the light is amazing and worth it over old blurples I was running. Update 11/18 I realize when you hit 75% on the dimmer it jumps to 100% power draw (tested with wattage meter) So you can run 100% at 24 inches just fine, atleast I was. First day of flower for me. I'm excited to see what it can do!