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Description
Sunmaster Dual Spectrum HPS LampsSunmaster lamps are dual spectrum bulbs that are suitable for use throughout the vegetative and bloom phases. During the growing cycle, many growers use a metal halide lamp which burns at cooler temperature. This doesnt mean it isnt as hot, but that it is more blue than an HPS lamp. When plants are in bloom, the grower switches to HPS which are warmer, being more red. While there are advantages to using separate lamps, sometimes only a dual spectrum
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.6 ★★★★★
Based on 1885 reviews
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Product Reviews
★★★★★ 5
Very Useful
Format: Paperback
I used these for my A+ exams and I didn’t really end up reading the material. I more so used them for their practice exams. That’s only because there’s a lot of information to digest and I was in a rush to take the exams. I still passed so I find that they are well formatted. The questions imo needs to be read more throughly than the exam questions themselves.
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Reviewed in the United States on October 24, 2024
★★★★★ 5
Amazing study tool
Format: Paperback
Perfect for the exam goes along with the actual course 👌
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Reviewed in the United States on March 12, 2025
★★★★★ 5
Details I mok
Format: Paperback
I like the explanations, but I don’t like small print, particularly for older people
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Reviewed in the United States on December 20, 2023
★★★★★ 1
31 pages were missing from the test book
31 pages were missing from the test book
Pages 453 to 484 were missing (see attached photo)
It’s very hard to prepare for a comprehensive certification examination studying from an incomplete text. FYI, the book was purchased new and not damaged, it was bound that way
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Reviewed in the United States on February 18, 2023
★★★★★ 3
Kindle version does not come with tests/flashcards
I did not know this beforehand. They hid this fact waaaay down below and added it in below the details and neglected to add it to the main description at the top. Be advised.
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Reviewed in the United States on April 10, 2022
