LumiaStar 2X2Ft 100W LED Grow Light Panel - High Efficiency Full Spectrum Plant Light with 2.0 PPF/W & 20000 Lux Output - Perfect Replacement for T5 Fluorescent or 400W MH Grow Lights - Ideal for Indoor Gardening, Hydroponics, and Greenhouse Cultivation - Accelerates Plant Growth (VegGrow Spectrum)

I bought these thinking each bulb was 200 watt but its actually 25W x 8 bulbs = 200 Watts, so they are not quite as bright as I was hoping. Im not sure how they come up with 40k lumens other than maybe each bulb puts out 5k lumens and total is 40K. It doesnt quite work that way though. 25 watts is 25 watts and 5 lumens is 5 lumens. Just because you put them side by side does not make them 8 times stronger. It just lights up more area. Im going to give them a try and pray my baby Desert Roses dont stretch from lack of light. For now I will need to put them literally 6 inches above my seedlings. I compared my 100 Watt LED Bulb next to this light and the bulb is way more brighter. It actually lights up the plants a lot more than all 8 bulbs. The only good thing about it is I dont have to worry about it burning my seedlings whereas my bulb will if its too close. They want that bright white light but dont want to be fried. If nothing else maybe I can buy some stronger bulbs for this. It may be worth asking the seller if they have any. I will update this review after 1 month if my seedlings grow the way they should and give it a better rating. For now 3 stars is all it gets.This was a replacement for a T5 version of the same fixture. The led's are extremely bright. A little brighter than the T5 bulbs. My only complaint on this product is the fact that the hangers that come with it are only cheap chain which can only be adjusted so much. I purchased a 4 pack of the corded style of hangers and they work much better.Overall I will give this product a 4 star review.Gave a 4 star, seems to be pretty well built but note it does put off some heat. I received mine with corner crunched in from shipping. It was damaged right where it has a input for plug inDig emVery bright full spectrum lights with almost no heat generated.I haven't even had a whole year and lights have blown out already! Very disappointingBought 3 and they work great.Good 200000 lux