quick question: my clones are starting to look like they need a taste of a little more PK, but I only have the Fox Farms Grow right now and don't want to go buy more an hour away in the middle of the school week. can I measure out an equivalent amount of my GH ferts and put it in water at about 7.0 ph? I can measure it there. also, it's possible i've been phing the water a little too low... like 6.0-6.5 on occasion. can this cause the lockout i'm seeing? if needed, i can post pictures tomorrow.