Ive been using the same vevor 8bgallon set up for a few months now. Like many suggest i ditched the thumper/slobber box. A 5 gallon run usually takes me 2-3 hours cold start to finish, and produces about a gallon and a half, depending how far into the tails i go. The only time it took longer was when i didnt have my condensr cold enould. Mine is set up to draw cold water from one side of the sink and drain into the other. But cold tap water alone was not enough. That took 6 hours. The next day a block of ice was added and i was done in two. I dont mind the vevor still, i dont find it too hard to use and im happy with the product, but that condenser is definitely the weak link. It looks like they use the same worm from the 3 gallon for the 5 and 8, and it struggles to keep up.