regrading the Panacur (2.5% cat & dog wormer 100ml) i bought a bottle of the internet how do i convert it to rabbits for a 28day period? i thought half a ml? is there anyone can help me?? and do i have to weigh all my rabbits, iv got a rough guess that most of my rabbits are 1.3-1.7 KG? does all this sound about right? :?