ok i read the thread on using furan 2 for zoas and zoapox. It says 1 packet to 1 cup of water. Now i have a rock with about 50 zoas on it that will probably not be fully submerged in just 1 cup of water.
Does this mean that i put 2 packets for 2 cups and 3 packets for 3 cups and so on?
Does this mean that i put 2 packets for 2 cups and 3 packets for 3 cups and so on?

