Does same apply for pro mix BX?
I would say do that with all store bought soil! I love to use pro mix because it is easy to flush out if you wind up with to many ppm's or to low or high ph level, I dont know what it is but my clones seem to suffer when I put them in the promix with nutes imediatly! some of the lady's will tell you quicker than others that they are missing some thing!
I water with a pitchure, I keep a 30 gallon tank mixed up with a couple of air stones in it, my well water tends to jump up and down on the ph for at least a week in my res, so I always make sure I have a full res and check it every day, I have to ph up and down for at least a wk and then it steady's out! never over water, the way I check if I need water is by lifting the pot untill it gets light and then I water, I usualy give it enough so I can take a reading of it coming out, the closer you get to crop time the more water they will need!
Im going to be using the kiss method next time around, you can get every thing you need from most home and garden stores, kiss = keep it simple stupid!
Best of Luck!
Peace