Nitrogen toxicity and tip burn

You're on the right track but you need to give it more than just a little drink... you're growing in 5 gallon pots so you would need to give each pot 15 gallons of pH'd water in one go... when they dry out and need something more, you want to give them 1/2 strength nutes for their first feed. Going forward, you need to keep the nitrogen heavy nutes at 1/2 strength but you can get back to whatever dose you were giving of the bloom nutes... The curling should repair itself but any burnt tips will stay burnt... no worries. Good luck!