Banana Blaze Auto (Outdoor)

Week 6 - The plant is still growing. May she is entering preflowering stage. She doesnt drink much though. i stopped adding FISH MIX and switched to BIO GROW. i had to spray the whole plant with a water rapeseed oil mix due a aphids problem. I think it worked out. The leafes still a little bit shiny from the oil mix. Light yellowing at some leafs but nothing to worry about (i guess) - or should i be worried? I add Biobizz everytime i water - all 2-3 days - because she doesnt drink much. My problem - NEED HELP: My second plant (NL Auto by SensiSeesds) got Black leaf tips curling up. definitely no over watering. Its very windy the last few days - maybe sunburn? The plant is dry every evening and drinks 2 Liters. (Feeding: Biobizz BioGrow (3ml), Bloom (2ml), Topmax (1ml),<alg-a-mic (2ml)). Anybody have a idea?