Hey there ICP, i took a look, looks like two minor things to me. First of all those leaves with the strange coloring are a sign of phosphorous (P) deficiency. Second the little spots on the leaves some very minor calcium deficiency. You can fix the P-def with a bit more P/K fert, calcium deficiency you can fix with cal mag (2-6 ml / liter) . If you do remedy these, they should actually recover in around a week's time . Hope this helps bro ! ๐