Pk 13/14

I've never used this before and was wondering if anyone has used it for longer than one week. I am going to try it because I don't want to waste my whole tank of nutes that usually last me three weeks. Can't find anything saying what ill affects may result from doing this but they do state to only use for one week.

sure, what week bloom are you on now?

I'm going on week 5

BillyBobJoe said:

I'm going on week 5

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ya you could use it up to 2 weeks before finish depending on which medium you go.

I'm using hydroton with low pressure aero

when you cut off normal nutrients in your final time, cut off the PK also. For aero i think the flush is very short ya?