2nd attemp 1 plant 300w led scrog

Not a lot has happened in the last 2 weeks, she has been topped, trained and pinned down to spread out across the pot and I moved her under the 300w led yesterday and unpinned her to let her grow towards the light for a week. Determined not to make the same mistakes as my 1st grow where I think I over fed from day 1, I have let her dry out completely and I will feed her today slowly. I intend on giving her 500ml mixed with 2.5ml p/l old timer grow 5-3-3 and 2.5ml p/l old timers root stimulant every half an hour. I expect the 5 gallon pot will take 5 litres and I shouldn’t need to feed again for 6 or 7 days when completely dry again. There seems to be a bit of weird new growth which I had in the beginning due to taking the clones during flowering I’m not sure if this is a deficiency? Small update.. stopped feeding after 2 litres, soil appeared soaked through. Waited 3 days then fed her 2 litres of plain water 2 days ago and dropped the net last night. I will give her another 2litres tomorrow with 2.5ml p/l old timer grow 5-3-3 and 2.5ml p/l old timers root stimulant