shaun...LOL...blu cigs...what a joke...
I prefer to drip 2-3 drops but I vape at 6 volts usually and that gets me roughly 3-4 puffs....
At 3.7 volts dripping the same 2-3 drops should get you a few more puffs then at 6 volts. Because at 6 volts it boils off the e-liquid much quicker......
As far as 901 carts go, I always did 10-12 drips to fill fresh dry cart....I would usually get bout 10 in, and I would just go til the top looked like a slushy...not all liquid, but had texture, like a slushy ..... I dont think I ever got 20 drops in a 901 cart...and after the initial 10-12 drops, I would just keep it wet and drop in a few more drops from time to time.
But, then again, it all depends on what kind of dropper bottle the e-liquid is in, and how much is in each drop...different bottles , drip different amounts. But you should get a feel for it, and be alright.
Hope this helped....
Let us know if you have any questions....
Enjoy your GG
-Tim