I have a few plants they are on day 39 and i use orgatrex 1.5ml per 1l of water and feeding everyday and another just start using pk 5-8 of 1.5ml every feed, my question i don't know if i have to use orgartrex and Pk 5-8 together or i have to use only Pk 5-8 now ? And how much is not to much i can use it ?