The coach gives the answer, then shows the proof
The first thing a visitor sees is the practical recommendation. The monitor proof sits next to it, so the message feels simple without looking made up.
EC is too high at 2.45 mS/cm for lettuce.
Strong solution can stress roots and make water uptake harder, especially during warm periods.
Dilute with clean water. Mix well, wait a few minutes and measure again before adding fertiliser.