Counter intuitive I know but apparently yes they can!
Salt or nutrient levels that are too high will effect the osmotic potential of the plant cell and reuce it’s ability to take up water. This is moslty what effectivly kills a plant in saline water conditions. One of my bro’s works in a large commercial NFT greenhouse, standard proccess there is to raise eltrolyte levels a month of so prior to havesting hydroponic tomatoes because it is a way of simulating dryer conditions by reducing the ability of the plant to take up water, which then has the effect or raising sugar and levels of flavinoid, resulting in less watery better tasting fruit.
Obviously this is going to effect nutrient uptake/transport, but I don’t know the hows or whats of that or if they need to compensate for this somehow.
One of these days when I don’t care if I kill a plant, I’ll test raising electroyltes towards the end of harverst to see if it migth do a simmiar thing with terpene levels etc. It’s kind of an anti-flush at the end instead of flushing as some people do
Dude that’s lookign wicked ! I have seen yellowing/leaf drop in a dwc setup much worse than you got without it appearing to cause problems. My bro is probably the laziest grower ever when it comes to keeping water levels, nutes and PH in the right spot, this means the leaves on the plants in his DWC buckets are often lookign a bit worse for wear, espeically later in flower. Surpisingly though it doesn’t seem to affect the end result in any noticable way.
It’s hot and humid as fk here in summer and mould is a constant enemy, more airflow and keeping a clean space short of AC is about all we can do here. Mould is a bitch.