I am planning on brewing my first batch this weekend. I have been doing a lot of reading and watching videos to prepare and I keep going back and forth about using a 6.5 gal plastic bucket or a 6.5 gal carboy for primary fermentation. If I use the carboy do I have to use a blow off hose or is the airlock sufficient? For the first time I am keeping it basic and bought a Simply Beer IPA kit. Is secondary fermentation necessary?