Day Thirteen Update
We're almost two weeks in now and the girls are making storming progress! Although we do have an issue...
PLANT #3's LEAF IS SICK!!!
It looks like a calcium and/or magnesium deficiency at first glance but I'm not so sure. I use bottled mineral water which has a number of trace elements and minerals including calcium and magnesium so a deficiency doesn't really make sense? Also the manner in how the leaves are affected isn't really consistant with a Ca or Mg deficiency?
I've had this happen once before, the first time I ever used the AP's infact. That time it affected all my plants and destroyed quite a few leaves before it seemed to correct itself and disappear. I recall CalMag doing nothing to address the problem then and flushing also had no effect either - It just seemed to run its course and disappeared once the plant was in flower.
I came to the conclusion last time that it must have been something to do with me not washing the AP's enough before using them and whatever chemical they had been treated wasn't agreeing with the plant. Sounds daft maybe but a mate of mine took some of the AP's from the same batch for his grow and he had the exact same problem. Our soils and nutes were different so it was the only thing that made sense at the time. The same AP's have been used since (3 or 4 times) and the problem didn't re-appear (until now) so that knocks that theory. Anyone got any ideas?
Other than that, everything is sweet. Lights on temps are a constant 26-27 degrees with 50% RH and lights out are around 19-20 degrees with 70% RH. They got fed today at full strength, 5ml Grow, 3ml Superthrive, 1ml Silicon and 1ml CalMag to see if it helps combat the problem. That will be the last feed of Superthrive until they get their first dose of bloom nutes in a couple of week’s time.
I'm away for the weekend so I won't see the plants now until Monday. Here's hoping for some super growth over the weekend!