Originally Posted by joe fresh
thx for the quick response guys.
well heres the problem with adding compost and dolomitic lime, my grow is much bigger than it used to be. i have 160 7gal pots to fill. and i dont have much room to mix the compost and promix together.
last run i used the compost and dolomitic lime, but added too much lime and raised the ph of the soil too high, so i had ph problems through out my grow.
so i thaught that if this time i used only promix i would skip right over that problem.
but once again i have problems...
With 160 plants with ph probs you must rip your hair out. pH problems are the worst, its such a bitch to fix it once they are planted and growing.
They sell soil test kits, I know this time of year you can get them at kmart and stores like that. It comes with a few little viles, you put in a little of your soil mix and a few drops of solution, wait a few mins and it will turn a color telling you your soil ph, it also comes with test solutions to measure the approx NPK of your substrate.
This kit might help you relieve some of these headaches before you plant. they also sell direct soil contact ph meters.