I am looking to make 1000ml of 80/20 3mg at 20% flavour i know the calculations to use if i use pg and vg mixing together but have found a good price on premixed base for 1000 ml but i know adding nicotine and flavourings will through my calculations off im new to this so please forgive me stupidness lol i cant find a calculator to use that has a premixed base option if you get me i can order flavour and nic in pg or vg to add to this base and get get the base in various vg/pg ratio to balance out the added extras but still looking for the above outcome and help would be greatly appreciated