@weefi, Before giving her 5 liters, i would calculate the required amount of water from the volume of soil i would take about 10% of soil as water. Because if this is a calcium deficiency the roots will be also affected and should be prevented from over watering because this will result in rotten roots and this would be the and for her and dangerous for the healthy ones because there are mold and bacteria that eaten the rotten roots and could affected the healty ones. So dont take too much water. il keep my fingers crossed, hope she will recover and getting big and frosty.
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