Hollow Legs
Regular.
TG, I use an aquarium stat, Aquel TS500 and attach a brew belt to the FV, set the stat at whatever temp required and the sensor from the stat to the outside of the FV and it works really good.
If I do two brews at the same time I just put a double adaptor on the stat and plug the two belts to it.
If I do two brews at the same time I just put a double adaptor on the stat and plug the two belts to it.