@Lukush, Thanks :)
Well your NL grow is 4 years back but I checked your other grows as well and now I want a SP6500 :D
If I am allowed to give some advice I would suggest to use up your nutrients and then switch to something cheaper like (US based?) Jack's 321 or commercial ones like Yara/Athena because Advanced Nutrient has a good branding but is EXTREMLY overpriced.
I pay ~ 1/5 compared to Canna and probably even better pricing compared to Advanced Nutrients.
You can mix your own stock solution in the old containers just check Hoocho on YouTube he made a pretty good guide about that.
40ml A + 40 ml B + 10l tap water gives me with my specific tap water ~ PH6 and EC 2, super easy to use.