Epson salts and high light plants

[rbarata]

Originally Posted by Ray

That was my interpretation as well - lower light and the plant needs more chlorophyll and the converse. Marschner's Mineral Nutrition of Higher Plants, a university textbook, indicated that its a change in light level that controls the amount of magnesium the chlorophyll molecule can contain, not the other way around, or the amount of chlorophyll.

So, if I understood correctly, the more light available, the less chlorophyll needed. So the chlorophyll levels in the leaves goes down, giving them the light green tone (due to the absence of chlorophyll).
Am I correct?