next time use wood or composite shims gorilla taped to the underside of the tray for proper drainage... That's how i get all my runoff into the drain.
Be very careful with dry koolbloom... I used that in my first two rounds and didn't understand how strong that is... It's very similar to moab and generally used as a ripening agent a few weeks from harvest. I know one other farmer that has used the dry koolbloom with much success... That's tex and his method is the tex's slam... He hits his girls with a one day feed of dry koolbloom at specific intervals during bloom...
I really like hammerhead for my pk boost in soil at the beginning of weeks 3, 5, 7, and 8 of a 10 wk strain... So far, i've yet to use the moab in soil, but i use both in hydro...
And finally, i've found that a consistent ph between 6.2 to 6.38 has been best for my soil medium which has dolomite lime and oyster shells that buffer and raise the ph slightly... :cool