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PPM - Does it Include Source?

I use bottled water or brita filtered. The PPM of these is between 80 and 200ppm (not good huh?).

Do PPM calculations include the source water? Like should I subtract that number first?

Also I have a 600W LED - have far should I keep it from my clones / seedlings (they are about a week and are doing good I just dont want to ruin them). Does anyone have chart or something that shows how close the light should be throughout the grow, by wattage?

Thanks this forum is great.

4 answers6 replies

Comments (10)

Mr. Grow It

Jul 12, 2020

I agree with @gregthe357 , that's a great tip. Another indication that your plants are happy is if their leaves point up towards the light as if they are "praying". However, some plants droop down before lights off, droop down after being watered, and many also don't pray like that in flowering so don't use praying as an indication 100% of the time.

Mr. Grow It

Jul 15, 2020

Replying to

@Tim Your plants look great man. It's cool to see that you're trying out training. Nice job. I actually just filmed a discussion video talking about plant training techniques with Pigeons 420. I should have it out in the next day or two on my 2nd channel. I think it will be helpful to listen to in order to generate ideas on how you want to train.