If your speaking about cartomizers. Yes, the polyfill is in there to absorb the
e-liquid that you put in there. If your using standard sized cartomizers (EX. Boge LR 2.0) than it will take 25 drops. Let it seep for 20 minutes before using to ensure that everything is wet.
If your using XL cartos (Smoketech Dual Coil Cartomizers) than 45 drops is the max.
After the initial fill than you want to top it off or add additional 5 drops after 15 hits or so.