Ok just placed some orders of BIO-Spira from drsfostersmith.com. I am going to be doing some testing on the product though to either aprove there 24 hour fish safe cycle or I am going to prove it wrong. I will be doing 2 1/2 hour interavals between each test to record any data that comes about. Has anyone else tested the product before? I just ordered 270 gallons worth so I am hopeing the stuff will live up to the reputation. What have you guys found with the product?