I have four 19 day old plants. I started them with just plain water for 2 weeks 24 hr light. Im using the ff trio and going by the ff chart that i got from off here. My Q is: why do the bottom sets of leaves (the oldest ones) start getting brown specs near the tips of the leaves and as time goes on the whole leaves eventually get brown and dead? Also the roots of the two plants with the leaf problems have formed what looks like alge on some of the roots? Is this root rot? Or just alge growing on the roots?
I will try to post pics asap, also i am going to check ph right now.