No need to restrict yourself on size. Yes they come that small but why limit it?
Many of us go the GL route but you don't have to, if you're planning on water washing then Methanol recovery isn't a must. On the other hand if you plan on just settling the biodiesel then you'll need to remove the Methanol. That could be by the GL route or just air bubbling to atmosphere, though that is less environmentally/neighbour friendly.
I dont have access to water at the back of the house, so thats why i was looking at the appleseed.
im going to bubble, the shed backs onto a wooded area and a big park so isnt an issue.
Im thinking of adding extraction to the bubble tank, i have a boiler fan so and its an induction motor so no sparks.
Ventalation is a must for me, as i cant drink and the meth fumes are a big concern of mine.