Madtrotter1 said:
Which cartos requier you to get there brand of tank I was looking at smoktech?? I think andit requiers one of there tanks

The Smoktech tank replacement cartomizers are the same as any other carto brand, except that they have a metal
flange down near the connector pin. This can match up with an indentation on the bottom cap of the Smoktech brand cartotanks. This was designed to prevent the tank from spinning around the carto, and prevent the tank from sliding too close to the battery.
Having said that, the flange is so slim that those cartomizers can be used in any other cartotank without any issues. You can also use any other brand carto in a Smoktech DCT tank without any issues.
All cartomizers have the same diameter. The only thing to watch out for is to match the length of the cartomizer (35mm or 45mm) with that of the length of the tank (standard or XL). Standard 35mm cartos are designated "std".
XL 45 mm cartos are designated as "XL", "mega", or "DCT".