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Nice project WZ..:) I in my hoop house I have a cold frame of sorts. The center bed is covered by a second hoop. In October I loaded it up with transplants of: Broccoli, Spinach, Chard, Kale and so forth. It is frozen solid these days.. Low sun, dark heavy cloud cover with snow for weeks on...

I would take that tomato about now..;) One always feels like a super hero protected from everything in the hoop house... Well, I waited to long to harvest the small amount of green fruit... and it got frostbit.. We have a couple golf ball size tomatoes on the window cell ... To be honest I...

I looked it up, best I can tell is about 50 Lumen per Watt with the LED My Biax floros are at 87 lumen per watt, and I assume cost a heck of a lot less. Lets see.. $7.50 per bulb, one Fulham workhorse 5 ballast runs two bulbs. Ballast=$22 Bulbs= $15 Total=$37 So for $37 and 110 Watts I get...

What is the lumen per watt? (Including the muffin fan to cool.) Also what color spectrum are those LED's Can you get them in the 6500K range? I use twin tube biax floro bulbs. 4800 lumen per 55 watt bulb (Bulb is only 21" long, so I can pack a massive amount of brightness in a small area.)

Hey gang new here.. Some of you know me from BYC. I grow and sell lettuce under lights. I grow about 100 plants to maturity every 50 days. I use a tower with 24x24 shelves and I use CFL's but a different kind. I use 6500K bulbs each bulb is 55W and is about 4800 lumen each. I find one bulb...