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Plants get the moon in nature and some genetics are more sensative than others, though also, green light is used by the plant more than anticipated. Yes the leaves are green because the reflected spectrum has more green in it than other colors, but the plant leaf (leaf, not pigment extract in...

VA = watts when PFC equals 1. Short story is max its rated for is 500W but if your load is inductive (like a fan) or capacitive then it'll be less because of the phase lag/lead. It'll be plenty to run 1, 150W fan. Edit - I mean power factor, not power factor correction. Power factor correction...

4 same model iPhones... The article goes on to talk about identical component tolerances (typically you buy 1%, or 5%, or 10%, tolerance components, meaning there's a measured +/-% of variation within all the components of the same model/specs for a given tolerance rating) and how it may be the...

I used to think they were about as accurate as the cheap lux meters, but according to this they are all over the place. Solid lines are the reference intensities which the cellphones were trying to measure...

NH4 sulfate Ca nitrate Mg nitrate Mg sulfate K phosphate K nitrate K sulphate Mn sulfate Zn sulfate Mo phosphate Possibly a bulk micro additive EDTA ^^That's what I'm looking at playing around with, but I'm just tying to determine the ratios that people are having success with so that I can...

I've used the GH 3part and the maxi series. And ya if you don't mind running me through your ppm conversion process that'd be awesome.

Maybe I'm not understanding correctly. Just curious what your elemental mole ratios are and what compounds you're calculating from, ie if you're equating 1mole of P2O5 into 1mole of available P, ect. Looks like you had posted pics with all the basic nutes the plant would typically want, ect, so...

Do you have a list of nutes by weight or mole ratio?

Are those ppm?

Sure. That's fine. 500W per tent. Cheap 16ga extension cords will be more than sufficient going from (controller) <-> (tent 3way + 500W of driver). If your wall is 120VAC (21A), then: You'll need at least a 12ga extension cord from (wall) <-> (controller box). ^^Stick to 50ft or less, the...

Generic schem showing partial short to Gnd Current pathway when Vn>Vgnd, causing glow (coulda shown it coming through the xfmr too, but you get the point) In this example, only when Vn > Vgnd, or when Live is +, will current flow in the path that will cause the LEDs to "glow," if L is -...

Haha well we all get a lil froggy from time to time. :bigjoint: The KB should be decent. Lets say it's 2.5μmol/J. 240W × 2.5μmol/J = 600μmol 600μmol ÷ 9ft2 = 66.7μmol/ft2 66.7μmol/ft2 × 10.76ft2/m2 = 718μmol/m2 Not going to fry em unless he drops the light super low, but should still have...

Ya nothing wrong with CMH. It's not as efficient, and will create more heat, but a pretty good wide spectrum. If you're in a tight area it will result in greater temps than equivalent wattage LED. I'd not mess with the MH/HPS combo as it's just more stuff to essentially create a CMH SPD. To be...

Plant # is calculated from grow area. 4ft2 per plant is typical for traditional grows, gives em a bit of room to grow into. With a 4/5wk veg, the plant will roughly take up about 4ft2 (more or less) by harvest time. A 4×4 tent = 16ft2 = 4 plants. Watts tell you how big your grow area will be...

Pretty sure your light is shorting through Gnd. I just tried to edit my comment and lost it somehow, but long story short is that I only see 3 ways the light can glow when timer is off. - Shorting from L to Gnd when power at N is cut - Shorting from N to Gnd when power at L is cut (unlikely)...

@SmokeyBear77 Was the new timer 2 prong or 3? Pretty sure your light is partially shorting through ground. The timer cut juice @ L: Sometimes there is a small voltage between N & Gnd. This is due to high currents within the branch and/or a long return path to the breaker. In this instance...

For practical maximum intensities (practical maximum intensity = about 80% of the absolute maximum intensity which results when CO2 is needed, and frying plants becomes a fairly high probability; I'm signifying absolute max to be 12hrs of 1000PPFD; 43.2DLI), you want ~30W/ft2 of white LED, or...

Imo any old multi meter will do anymore. Fluke is great name but imo the $9-$15 Wal-Mart special works just as well and if I need to get precise then I'm going to use a scope. Just typed in "single channel o scope" They are great for small stuff but they aren't as fast as a traditional multi...

Lol true story.

I'd be more interested in his ion concentrations and/or ratios. Also... Can you attain an elemental anaysis of a strain grown outdoors? Assuming all nutrients that the plant could possibly want are available within the soil, could you extrapolate an exact hydro recipe? You'd know essentially...