I suggest you download, and, read our free grow bible. Growing without knowing PH, EC/TDS, Humidity “low” does not cut it. You need to know all these values.
IMO you have wasted your seeds. The reason I say this is; You have absolutely no background ion growing and you have not researched anything as far as I can tell by your responses. I am sorry to have to be so blunt about this, but, I do not think those plants will recover, or finish with any decent yield.
Best advice. Do some research; Get the correct tools (meteres, pens, etc), and start again with a grow plan. It is sad, but many growers start seeds, and get in over their head before they have a clue. So do not be worried; You are among many.
Good luck, and if you start another grow, we can help you from the start. Peace