Hi all,
I have 4 clones in a 4 pot Amazon system with a SCROG. They've just started the second week of 12/12 and no pistils are showing yet. I'm using half strength Canna Aqua vega A&B plus half strength cannazym, with the TDS at 250 (0.5 EC) and dropping slowly. I'll increase the nutes at the next res change. I just changed over from a 400W HPS to a 600W HPS. Temps are: day 25C and 19 ish at night. Res temp is kept at 19 or 20C.
My problem is the ph has been dropping constantly. I'll adjust it to 5.9 first thing, then mid afternoon the ph is back down at 5.3 or so. I'll adjust it upwards again then it's back down about 5.3 at night. I'm using ph up to regulate the ph.
I thought it could be the cannazym breaking down the old roots, but I'm not sure. I encountered the same problem last grow, but the ph sorted itself out after starting to use Canna Aqua flores nutes.
Does anyone know what is causing the drop in ph? Also, what nutes do you fellow Amazon system growers use?
Bookmarks