Salt in coco coir

My recommendation is to flush th coco/perlite mix with 3-4 times and then start with week 1, low dose of nutrients. That should clear the salt build up in the grow medium.

👉Sometimes part of the process of making coco coir is to lay it out on the beach to dry after it is ground up. Some companies rinse it out, but I'm guessing many don't. When I prep my coco I do a fair amount of rinsing to buffer the coco and to rinse out anything like salt that may be in the media before I star the grow process. I use pH'd water for this. If your run-off shows a high conductivity rinsing it would be a good thing. You cant over-water in coco (unless your pot has poor drainage), so rinsing with low conductivity water that has been pHd in the range of 5.5-6.2 will help remove any salt in the coco. If your measuring the conductivity of the run-off you will know if you've rinsed enough by comparing the pre-rinse run-off conductivity and the post rinse conductivity of the rinse run-off. My run-off conductivity target is my in-flow conductivity +30mS or lower. For instance, my nutrient solution is mixed to 1.3mS. I try to make sure to feed enough to get at least 30% of the inflow volume as run-off. When my conductivity of the run-off goes above 1.6mS I do a low conductivity rinse, followed by regular strength nutrients one the run-off is back in range of the inflow. 👉So no need to transplant! Hope you grow some good big buds!