Cream Mandarine XL Auto & Jack 47 Auto

I watered them on Day 50, 4 days afer their previous watering. I used 4ml/l Bio Bloom and also had added a small amount of pre-dissolved epsom salts, enough to just raise the base EC by 0.1. They are doing OK now, I think I've managed to save just enough green leaf to keep them going for the final few weeks. They aren't going to meet their full potential by any means but I should get a result of some kind. They still have their very distinct smells, the Cream Mandarine XL Auto is fresh like apples and grass, whereas the the Jack 47 Auto smells fruity too, but also cheesey and yeasty and still makes me think of champagne. The Cream Mandarine XL Auto seems to have coped a bit better over the past few days, but the Jack 47 Auto is not doing so great. The Jack 47 Auto main cola (uppermost part of the plant in the picture above) is dying back quite quickly, and water uptake reduced recently too. The plant did not react well to the additional Epsom salts and lowered pH. The root mound was looking literally brilliant a few days ago, but today you can start to notice it has lost its whiteness at the top and has started to rot a little. Both coco plants are now on nutrient feed without the magnesium at EC 1.5 and pH 6.2 again.