Grow with me

So week two did not expect anything to happen but plants have been a bit slow for what I normally expect noticed on the lower older growth small bronze spots I no this to be potassium deficiency not what you would think at this stage of veg so before I fix it with feed I checked all other possible factors ie pH and ec is in the right range so before I start I calibrate my pH pen witch shows me my pH has been well out of range around 4.9 pH never has it been that out I will calibrate the pen every day now and make shore the pH stays in the right range 5.8 ph .ec is still at 1.4ec around 700 ppm I took the top two leafs off to allow lower growth more light now pH problem is fixed i expect the ec to need rising within a couple of days I will keep checking the run off of the feed and when this drops to between 1.2ec and 1.4ec I will go up to 1.6ec so if 1.4ec go's in and 1.2ec comes out it's time to up the feed if it stays the same I keep the ec strength the same if it goes up I flush with plain pH water to flush 0.6 ec water and then would lower the ec to 1.2ec just thought I would share my methods with you it's the way I have found works best for this type of grow medium and the run to waste feed method