I have been using KIS Compost Tea and their brewer for 2 years now and have to say this company is the greatest. Not only is their tea brewer great, but their tea brewed with their compost and food has done great things for my garden.
I have had several occasions to email questions to their service rep. and he always answers quickly and thoroughly.
If you are an organic gardener, give them a visit. You will not be sorry.