I think this is the answer that I was looking for. Too much Ca towards the end of the bucket, no control via passive transport.
Plants can be trained to accept a high EC by gradually increasing the EC, but this also makes osmosis harder for the plant.
Really great information - and I'm hearing that because of this need to regulate osmosis, the plant may grow faster with less nutes.
Visually, yes, it could be Iron deficiency.
Reading 1360 PPM on the 500 scale which would translate to (1360/500 = ) 2.7 EC.
But that would make iron less available, and we've confirmed that its availability is the issue (regardless of why)? https://www.canr.msu.edu/uploads/images/Plant Ag/SoilTesting_Fig1.jpg
Rather, running lots of PAR without PPM is the problem. Can't have one without the other. They must go up together. Balance the reaction.
Point I'm trying to make is, visually, how can you be sure it isn't Calcium or Sulphur deficiency symptoms showing, not Iron for example? They all exhibit interveinal chlorosis and yellowing in newer growth when deficient or locked out.
You're running 2.7EC. Using the chart, how can you be sure it isn't a mobile element like phosphorus locking iron or calcium out?
If that's true, why add iron, not take zinc away?
If you have a present problem and you're blasting it with heaps light, then it's more demand on the plant, potentially exacerbating any present problems.
That's very high!
Not at that pH and EC you haven't, not iron.
If your ratios are spot on, then why not take zinc away?
They exhibit quite a different quality of interveinal chlorosis.
I'll just grab it out of the bucket real quick hold my beer =D
Wouldn't be so sure of yourself, they can look pretty similar.
So you're still thinking it's deficiency?
Excess sugars are converted to starch and stored by the plant to be converted back to sugar for energy (e.g., at night when photosynthesis isn't possible). Plants with excessive starch reserves do not grow as fast.
Plants take up water and nutrients separately. It's not like the roots are sucking in nutrient water like through a straw. They use different mechanisms for water and nutrients and under normal conditions take up water quicker than nutrients, which is one reason why the EC in a res will fluctuate.
No wonder my roots are so big!
Where's your control plant?
Do you mean the plant with commercial nutes (Maxigrow in this case) to compare with? These aren't clones but F1 seeds. I moved off the GH after 1 week in all buckets. Just rooted some clones of the fastest growing female
in my conditions. Can test them next. Pic at 10 days in the aerocloner with aloe, 200 PPM Maxigrow, fulvic acid.
And I veg 24/0 which means those roots just keep on growing! How much of this will be available to resorb during flower at night?