excellent answer Herbie. Thanks for taking the time to answer the question so thoroughly; I have a much better understanding of what you mean now. Could I bother you for one more question, maybe 2?

1) if my water is 250 ppm, does this mean I should only change the res once ppm reads 250 again, or somewhere very near? is this a good way for your plants to let you know that it's a good time to change their diapers?

2) if the feeding schedule is designed according to a weekly basis, does this mean, that if a plant in week 4 of flower requiring 1500 ppm drinks, let's say, 2 gallons in a day and the reading the following day is 1(from 1500 the previous day), that it would be okay to feed her just water for the remaining week?

thank you very much, this has been one of the most useful threads i've come across...and judging by the other responses in this thread it looks like welcome information for many others. imo there should really be a sticky explaining this, because the label on the back of nute products is pretty misleading and vague. i think purposefully, so the majority of customers overfeed and therefore over-purchase, but that's a whole other matter...
macnasty Reviewed by macnasty on . Nutes Hello, Im just working on a Hydro setup, Im going to be using a blue rubbermaid container and going to do probly 2-4 plants. I was wondering what kind of nutes I have to buy. I was looking at the Flora brand. I was wondering if I should go for something else. Im in canada so somewhere in canada or that has cheap shipping :P I also don't know how to use the nutes. How often to put them in the water. When to put them in the water. If someone could help me with these things I would very much Rating: 5