Did you add 20 percent of a product like this?
I believe that product contains 25 percent Calcium. Which if it does this is causing a problem with your plants. The ratio of the nutrients is pretty important. The ratio of Calcium and Magnesium is overally important. Plus you are in Coco which coco has a citation exchange that occurs are part of the manufacturing process. The coco coir is the husk of the fruit, during the manufacturing process the husk is broken and new citation sites are created. These site stripe Magnesium out of the water further causing problems for the Calcium Magnesium ratios. Do basically what you have created is a situation that will probably not be able to be fixed with just watering the plants because
the lime is mixed into the soil. What you are going to have to do is go buy some new coco and ideally buy premix 70/30 perlite and pull the plants out of each pot. Probably a good idea to put them in a 5 gallon bucket of say 250 PPM with ferts only right now to rinse out as much of
the lime as possible. Pre load the coco with Magnesium Sulfate (epson salt you can get at the drug store. Get the unscented and look up how to pre charge coco with Magnesium Sulfate. replant in fresh Coir and keep the media moist, not soaking wet but moist. The hardest part of Coco is when the plants are young and have not filled the pot with roots. Once that occurs it will be much easier to figure out a watering schedule.