@Herb420, hello!
I am sure that your issue is overwatering. I am watering my plants by hand, seedlings the same. I need to use a bit of PH down to obtain the desired PH, thats means approx 6 for me. I am watering the seedlings once at 3 days but without runoff. And I always check the pot to be light, so no water left inside before watering. if its heavy, I will wait one more day. I had problems with overwatering before and now I am doing my best to avoid it :)
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