So why didn't you dose Spectracide or Phytofeast to get your NO3 / PO4 up before the macros died?
I have been since late January (see post #64). I've even upped the NO3 and maintain a steady 4ppm now.
I have been dosing Molybdenum and Iodine as instructed in Triton's icp tests - someone had suggested their importance early on in this thread. The only elements which have been consistently low (but still within Triton's range) have been in what they refer to as the Fe Group (Chromium, Cobalt and Iron), hence the reason I keep pondering iron additions.
Already picked up some ferrous gluconate, just need to decide if I am going to use it now or not.