Run half strength.
Are you watering until 20-30% runoff? Also if running a higher feed you would water, feed, water, feed etc.
If you want to feed Everytime run you nutes 1/4 strength and make sure to water until good run off.
You are over feeding and not watering enough. You need that much run off to prevent salt buildup. Also dont let them sit in run off.
You need to leech the soil (flush). Run 3-4 times the pot size worth of water through the pot. Or water only for a few waterings with plenty of run off.
When you start back feeding cut the feed down and water more.