Healthy?

Looks like the plants had a little funky moment and you responded quickly with what they needed. Always let the grow medium dry back and water with healthy plain water a couple of times to reset them. This way you can rule out lock out. If your plants are growing fast you’re doing great, why not add a little bio grow. If they are autos go really low with the dosage, quarter strength to begin. In my experience Bio grow is potent and can cause nitrogen toxicity in autos if applied heavily to young plants. You might get told it calcium and some other specific nutrient…maybe but you treated the plant holistically with ph plain water and put it back on track. The new growth of your plants looks healthy green great job, good luck Ferniz👍