Lol. All my grows have had issues. So anything I respond to I've probably dealt with. My goal is to just grow a crop and not have any leaf issues from whatever.

. Probably some luck involved too.
I do have a grower friend in another state that has pointed me in the right direction several times. He pointed out to me that feed charts like on general hydroponic are good place to start. Before that I was just winging it with fertilizer I bought from home depot. Then reading posts here gives me solutions and ideas for next grows. So many knowledgable people here but what's most important they are all cool about it.
Just adding another ts600 in your 2x2 for flowering photos is enough light. I'd only run autos with a single ts600 and run 20 hrs and your yeilds should be pretty impressive. If you fill your tent with 3 or 4 autos I see no reason why you couldn't get 10 to 12 Oz from the single ts600.
FYI. I have completed 4 grows. Two outdoors and two indoors. So not super experienced.