Okay so, Im new to vaping and i just got my first kit 3 weeks ago, its "SMOK R80 Tc" its a good mod over all and since I've been using it for the past 3 weeks, i figured its time for me to clean my tank and Clean/Replace my coil, which is 0.3 Fused Clapton i think, now my question is, is it okay if i wash my old coil and re use it or get a replacement & i got a replacement coil which is dual steel 0.25 sub ohm i think, whats the difference between the 0.25 and the one im using right now?