Hi,
"i use 7ml of ada step2, 7ml brighty k, 2.5ml easycarbo daily"
Yours fertilizing regime looks not fully completed, posibly plants feel deficiency too.
I don't see Phosphorus and Nitrogen.
Example for complete ferts like that:
ADA: Brighty K, Green Brighty STEP 2, KNO3, KH2PO4
+ You can...