Empyrean421
Active Member
Here is an update 28 days into flowering.... Running out of space, anyone care to make a guess if they'll get to big? This is my first time...



lando
most CFLs come in two temps (that's the 'K' thingy).
"daylight" or "cool" are usually 6500K (good for cloning and vegging)
"soft white" or "warm" are usually 2700K (good for flowering)
I had to visit the manufacturers web site to determine mine since it wasn't on the package.
you can figure to get 60-70 lumens per watt for CFLs. I've seen 10,000 lumens per square foot as the recommended amount. And of course you need to factor in the distance the lights are from the plants (so much to consider).
that's why I supplement my 6500K with a few 2700K (3 to 1 ratio). my average ends up about 5550K.
of course, to be really scientific instead of taking the manufacturer's word for it I should get a device and measure the actual spectrum from the bulb, but that might be overkill![]()