Looks great possibly a little hot on Nitrogen or maybe just acidic soil. If you start seeing Ca locked out it's likely overly acidic soil so test it with red cabbage juice. You can test run off but honestly I trust taking a sample of the soil and testing it with cabbage much more. You can Google test soil acidity with red cabbage, it works great. The little signs of N toxic are very little and in fact most of the plant looks very healthy and vibrant so it is more likely any problem there was is now in the past. great job if those plants keep looking that healthy you are going to have a great day in about 8 more weeks.