help with my PPM plan and my Veg Weeks

i just got my seed in today if anyone has used any of this plz send me a tell of how long your your Veg was

germ-1 week no nutes
1-2 weeks 200ppm
2-4 weeks 400-600ppm (depending on how the plant reacts)
12/12 week 0-2 50/50 veg/flower nutes at 800ppm
2-4 weeks flower 1000-1200
4-7 weeks flower 1500+ if plant will take it!
7-9 flush (if Indica. if Sativa you still have some time for full nutes!)

That looks like a good guide to me! ... Note: GUIDE! - Watch your plants to figure out where changes are necessary!

But if you're going to measure in PPM, could you tell us if your PPM is EC x 500 or EC x 700?
EC or CF are much better and more accurate units to measure nute levels in than PPM as different PPM meters use a different conversion rate from EC, all things are initially measured in EC and then converted to PPM, but PPM and EC are not directly related so the equation can become complicated - Sorry if that's really confusing lol

germ-1 week no nutes
1-2 weeks 200ppm
2-4 weeks 400-600ppm (depending on how the plant reacts)
12/12 week 0-2 50/50 veg/flower nutes at 800ppm
2-4 weeks flower 1000-1200
4-7 weeks flower 1500+ if plant will take it!
7-9 flush (if Indica. if Sativa you still have some time for full nutes!)

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EcX700 ppm CF and EC PPM Ec X 500
not sure what is the use i been using the Ec X 500. plz tell me if i should use the other one

If you're Bluelab Stick tells you the EC and CF as well, I'd just use them instead of the PPM ... Look at the PPM in that previous guide and just convert it to EC or CF ... I'm not actually sure why PPM exists, it serves no purpose over EC / CF that I know of or can figure out haha

GreenphoeniX said:

... I'm not actually sure why PPM exists, it serves no purpose over EC / CF that I know of or can figure out haha

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Accuracy. Larger set of numbers means you can fine tune better.

For example you may want a PPM between 600-700 (with a CF 0.7). If you were using EC your number set would be between 0.85-1.0, 15 possible data points if you have a "typical" pen. Now with the same pen you have 100 possible data points when using the PPM scale.

Accuracy. Larger set of numbers means you can fine tune better.

For example you may want a PPM between 600-700 (with a CF 0.7). If you were using EC your number set would be between 0.85-1.0, 15 possible data points if you have a "typical" pen. Now with the same pen you have 100 possible data points when using the PPM scale.

Click to expand...

I suppose ... But to get the nute levels that accurate you'd be adding like .25 ml per litre of water to fine tune it anyway lol ... My data pen thing has two PPM (500/700), EC and CF, they're all side by side comparable so the PPM is in no way more accurate than the EC or CF reading ... But I suppose if you had a digital display on your EC pen it would be useful to read it in PPM? ... But practicality wise, you only want the pen for a rough guide really, backup if you will, the rest you should be able to (or learn to) tell by looking at your plants and listening to what they tell you they need more or less of!

Cheers! - And cheers for that post, I never thought of it like that before really lol

Conversion Factor (CF) isn't a read-out standard; EC x CF = PPM or PPM / CF = EC.

I assume it's just the ability to switch between standards, NaCl (0.5 or 500) or 442 (0.7 or 700).