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http://www.youtube.com/watch?v=5jD6xJKubiU this is the system that i will use , but with 16 plants , the thank is max 99 liter , and i want to use rockwool for roots.but with germinated seeds not with clones.i;ve never use before nutrients , i growed outdoor for 3 years near the forest from...

my source of water is city water and yes Ro , i allready mesure the Ph several days , and its arround 5.5 ,5.4 , 5.7 , so its good , and i saw many hydro movies , but i have not seen in anyone exactly how to make ppm,i know that when the plants grow , you need to high the ppm , its not save...

hmm, not good to hear this , so , without the ppm meter its imposible for me to measure the ppm ?for example i read on nutrients bootle , and say for example 5/ml on 10 l of fresh water once at week.my hidro sistem is about 100 l for 16 plants.so ?

hello , i want to try hydro but i can;t understand some stuff.what s "PPM"(parts per milion) and how much important is it ?in 1st place i allready saw some videos but nobody explain whats is , or how tu mix this PPM , why is 1200 on 5 week of flowering , and why is lower when vegetativ.i think...