hey everyone its getting to the point in the next day or two for me to start my cycle. i was going to go with the fishless cycling by adding my own ammonia. the only problem is the only ammonia i can find anywhere is clear ammonia which has the basic ingredient plus surfactant, from all my research everyone has said pure ammonia with no surfactant or anything.. where can i find this pure ammonia? places i have already checked was local grocery stores, wal-mart, and hardware stores. they all have the same clear ammonia with surfactant.