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hey guys, i need to change the p.h of my soil. so can i use hydrochloric acid to do this? its strength is only 1 molar so its very weak. Also i wanted to know if i could use this will it damage the roots or even the plant as its uptakes water? cheers all.

hi all, ive been into 12/12 for over a week, its starting to sex but i'd like to know, when does my plant stop growing? its about 12" tall now, its showing signs on the last two nodes, but it keeps getting taller, my 125w cfl is about 1-2" to the plant, so when will it stop and put the effort...