- hi bigbudda , from my own experience iv found rhiztonic and cannazym to work well same with the pk 13/14 with no ill affects.
- rhiztonic really helps put down some good roots in the first few weeks "in my case right through the arse of the pot"
- cannazym can be used for reusing soil but has other benefits and added minerals. I even use to help lower the ph of a feed sometimes rather than acid as it just breaks down dead roots and helps the uptake of nutrients
- I only used rhyz up until flowering started and once roots were established I then switched it for the cannazym right through flowering for some p content rather than nitrogen
- cannazym also worked great for flushing salts buildup always seemed to perk the plant up a little afterwards
- never used boost its quite pricey but pk13 / 14 without a doubt makes a difference to the crop - timing on using the pk varies some use once or twice around week 5/6 on a ten week strain and others might use right through flowering I think its just whatever you find works best for you mate
