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Grand Master LEDs Master 6 Veg 660W LED Grow LightDescription Top Features: Designed for Commercial production, vertical racks, low ceilings and grow tents IP 66 Waterproof Folding Design for fast and easy installation Knob Dimming Recommended to be controlled with the Grand Master Controller Inventronics EUM 680 5 Year Warranty Specifications Max Wattage: 660W 240V Voltage Range: 120 277 Volt and 480V available Vegetation Footprint: 5' x 5' System PPF Efficacy: 2. 71 umol joul Total output: 1815 PPF
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4.2 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
School book
Format: Paperback
Needed for college - reasonable price
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Reviewed in the United States on September 9, 2019
★★★★★ 5
Exactly As Described
Format: Paperback
Used this for the SOA's FAP modules
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Reviewed in the United States on December 31, 2018
★★★★★ 2
Bad book for SOA exam, but oh well.
Format: Paperback
While required by Society of Actuaries as the textbook for Short Term Actuarial Models exam, I could not recommend this textbook for any other purposes. Written by two Canadian actuaries, a lot of terms and explanations used in this textbook cannot be transferred into US P&C insurance.
It fails to explains insurance's purpose and products effectively and as an intro book with unnecessary sentences to deliver personal thoughts.
It is also a mess in following sections on ratemaking and reserving. I cannot sense a flow from this book that guides readers in an approachable manner.
Overall, author compromises the size AND the quality.
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Reviewed in the United States on April 3, 2018
★★★★★ 5
Buying secondhand is good for the environment
Format: Paperback, Format: Paperback
Buying secondhand is good for the environment. It all reads the same. This book was as expected and arrived quickly, no complaints.
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Reviewed in the United States on May 10, 2023
★★★★★ 5
Andy Greenberg is a terrific writer!
Format: Kindle
I absolutely love all of Andy's books. I've read them all, and his style of writing puts me right there in the action. I'm a heavy reader, so it takes a lot for me to be so moved as to write a review. This book is freakin amazing. I was on the edge of my seat the entire time. It's part investigative journalism, true crime, crypto hacking, blockchain shenanigans, I LOVE IT! It's a nerds dream novel, but easily enjoyable from someone unfamiliar with bitcoin or the blockchain. Such a wild story, holy moly. I can't say enough good things about this book. I bought 4 copies (3 to give to my sons), and I just now purchased the Kindle Edition. Thanks Andy for all your incredibly rigorous investigations and work that you do.
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Reviewed in the United States on February 7, 2024