Necrotic lower leaves are typically caused by pH stress (hopefully) or pythium (root rot).

Symptoms will always get worse before getting better with damaged roots. The time it takes to recover during flower severely affects yield/quality.

There’s no need to argue, parents just don’t understand. Said the pimp slapper. Reminds me of when my parents couldn’t program a VCR in the 80-90’s and give me the same blank looks today when it comes to computers. Didn’t y’all invent this shit? Asking for a Gen X friend.

Time is money.

That type of leaf curl is typical of wind stress. Do you have a fan pointing right at it? It should be fine as the tap root gets a little more established.