Hello, I have a calcium issue during my 6th week of flower on some blue dreams. This is only affecting 10% of the flowering crop. But it’s bad. I have added more calcium but I haven’t seen it halt. Recently I came across ILGM PH chart, it says that calcium uptakes starts at 6.0 PH. We currently use a ph controller at 5.7 ph. Which would limit the uptake since we don’t allow the water to get to 6.0.
Should I just run at 6.0? From the
I want to fix ASAP but don’t want to cause another issue so late in flower.
My set up:
Tap water at 25ppm to start.
Emerald cal mag at 2ml per gal
We run flow tables with 16 plants each all in pots w clay pellets. We water every 45 min for 10 min. Ran from a 70 gal res. Feeding two tables each.
We also have a 26 bucket RDWC.
we use AN ph perfect three part base and the AN flower additives such as big Bud and candy. We also rotate b52 and voodoo.
Plants on both the tables and buckets are showing the signs.
My pic is not the best I’ll get better shortly.
We maintain flower ppms around 1000 and keep PH steady at 5.7. Water temp is 67-71. Air stones everywhere.
If the calicium uptake issue is corrected should I see rebounds of those plants for thier last few weeks of flower?
I can get some leaf pics after dark today.