Actually, no not really - if I understood correctly - he spun down all of the 'bacteria' - and used just the pellet. So 1. He could have missed spores, 2. The product is designed to be used as is - i.e. not spun down. This is the problem with not using the instructions on the product for testing. JMHOHaha, if you posted this, asking if your cycle stalled or never got started, my answer would be “a dud bottle of Dr. Tim’s is not am uncommon occurrence”.