i used GHE flora series for my 3 first week of veg. in 1 week of flower i switched to using AN line. I used old connoiseur with bud candy and i started the first week of bloom on 500ppM (EC: 1.0. the second week i added big bud powder by 25g. and bud candy 140ml in my 70 res. 2ml per liter. second week i upped the ppm to 600ppm. I been watching the ppm rise about 30ppm through each day and just added water so it falls down to 600 again. 4 days in week two I experienced small burns at the tip. so I dropped the ppm to around 550 for the rest of the week. then came week 3.what should my ppm be now? Now i started mixing in my addetives first. big bud powder 30gram. bud candy 140 ml, and b-52 140ml. this gave me a ppm around 600. and this is before adding con a+b. i added around 50 ml of each,this took my ppm around 750. why do i get burns with so little ppm in week 2. i grow jack herrer. i use well water and the ppm is around 150 in my water. I had to buy 2 new bottles of connoiseur and they only got the ph perfect, this doesnt work good with my water and the ph ends up around 6.7. this could also be because i cant add 2ml per liter cause then my plants will fry. i was teached that u should add the addetives first like big bud,bud candy at full amount. then add the base nutrients up to the ppm you desire. please help with some inputs, what am i doing wrong? why cant the plant take more nutrients? what to do with ph perfect? i dosnt work using cannas ph down.