I’m on my second organic grow.  Based on the pictures in your 7 steps book I thought I might be having a PH issue.  I tested my soil ph and it was 5.4-5.6 in my photoperiod pots and 4.9 in my one autoflower pot!  I looked up how to increase and it suggested baking soda, lime, or eggshells.  What would you do in my situation?  They are all 5 gallon pots with build a soil 3.0, craft blend and stash blend.  Thank you so much!