I have 2 plants in 70 30 coco perlite in 3 gallon fabric pots. I am having some problems with the plants that may be ph or nutrients and I think it may help to flush the plants. I tried putting 2 gallons of water through each of the 2 plants last week but it looks like that may not have fixed the problems. How much water would you put through each plant and would you include calmag in it? I use tap water and usually put in between 2-5 ml/gallon of calmag with the water on there. If you flush with no calmag in the water would that remove the buffer on the coco on there?