Ouch, a sprained wrist sounds rough. Hopefully it was from something cool like stopping an armed robbery or trying to lift a plant with too big a yield... :thumbsup:

Dog: at four hours of PAL, I'm left with 20 hours of time that I need to fit 12.5 hours of SID equivalent time into. If I have to use all PAD and no actual SID, I'd need a time factor of 20/12.5 = 1.6.

For readers who may be confused at our acronyms:
PAL: Photosynthetic Artificial Light
This is what most people would call an indoor plant's "daylight". Photosynthetic because the plant is creating energy from light, Artificial because it's coming from light bulbs and not from nature, and Light because the color from the blue end of the spectrum makes that plant think it's daytime.
PAD: Photosynthetic Artificial Darkness
P and A same as above, Darkness because certain colors from the red end of the spectrum make the plant think it's nighttime.
SID: Standard Indoor Darkness
AKA total darkness. Since this is the absence of all light, it's an easy standard to base other calculations off of. As indoor growers we know that we need about 12 hours of SID to make a plant flower, so we can calculate what PAD does to a plant based on known relationships of the effects different types of PAD light as compared to SID.

So when we post a timing schedule that looks like 4/9/11
The 4 is blue because it's PAL, the 9 is red because it's PAD, and the 11 is black because it's SID.