Help I think my plants are over fed!

Plants are in coast of maine and I've been running bio canna organic nutes but small amounts recharge (not in flower) and fish shit. Plants have been doing fine this run until I crept into flower I hit them heavy with a feeding a week or two into flower and it worsened 2 weeks later I thought it was enough watering in-between so I gave them another feeding. Never really water till runoff. Last tiime I checked was last week in veg I was 3000ppm but they where beautiful and happy now after two feedings I'm passed 5000 and there in rough shape. Made sure my pH pen was calibrated all plants have been in the normal areas of around 6.4 I think until harvest I will only give straight water in hopes for things to come back?

I would flush personally, but theres a lot off cock head growers in here that think otherwise. Good luck bub.

People here aren’t against flushing a build up out of your soil. If you aren’t watering to some run off everytime there’s a great chance you’ve got a build up happening and are brewing a primordial sludge in the bottom of your pot.
People here are against flushing a plant to “rid” it of excess nutrients in a plant, in the final stages of flower.

Can we flush multiple posts?