Hej all,
Baffled with this one and considering its first grow since 1999 I don’t have current experience to fall back on. Would appreciate your wisdom on this.
Growing 9-10 week flowering strains. Just started week 8 of flower.
The last 10 days the Feed EC & Drain EC has been consistent (1.5ec/1.5ec). Then reduced the Feed EC to 1.1 on 4th May. Since then my Drain EC reading has increased to 1.6ec whilst the Feed remains at 1.1 ec.
Reason for reducing the nutrient to 1.1ec was to get the nutrient load down before flushing in a couple of weeks. Also, Overdrive was applied for 10 days, this ended on 3rd May.
I was not expecting the drain EC to slightly increase when I dropped the nutrient EC!
Was the reduction in nutrients too sudden? Can you get lock out from reducing nutrient concentration too quickly?
Options; (i) Be patient and give it a few days for the drain EC to come down.
(ii) Increase the Feed EC back to 1.5 where it was steady for so long and then gradually reduce the nutrient EC thereafter.
(iii) Flush: and continue with the current 1.1 ec feed.
(iv) Flush: Revert back to the 1.5 ec feed.
(v) None of the above.
Other info: Using a drip/drain Rhizosystem with Coco. 3 daily watering’s of 6 or 7 min durations for the last month or so….
Nutrients: Canna Coco a/b, `Cannazym, Canna Bloom, Mammoth P, B’Tree Silica. Overdrive application finished a couple of days ago.
Thanks
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