Ott lamps are expensive, but worth the money. I move many of my plants indoors from late fall to early spring. These lights are on 18 hours a day, 7 days a week, 5 months a year. All for just one cent a month. They last about 3 years which makes the price better than regular hardware store grow lights which CAN last a year. Ott headlights are strong and reliable. I only gave 1 star to every single category listed because they made no sense. This is misleading because I don't think "transparency, warmth and thickness" refers to lightbulbs. Lamps do not heat up and do not even overheat. But this product is rated 5 stars because the bulbs are perfect! I will never stop using Ott bulbs as long as I have winter tropics indoors and they are available!
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