I am new to DIY juice.. I tried 70vg 30pg and it is too thick for my evape pen.. This shop does their 60 VG 40 pg and I buy all the time there. My evape pen and coil seems to work great with that mix. If I do cotton candy flavor and buy the premix VG/pg with 3 nicotine and make a 50 size bottle of juice can someone tell me what pre mix to get