Oh man, what a damage!
But dont loose hope mate, flush it today really generously, at least 2l thru one pot.
then wait two days and start nutes again, but you should reconsider your dosage counting..
I have them i much bigger pots , recommended dose is 4ml/l and 1ml/l of green sensation, iam watering with 2l so i givin them 10+3ml/2l