i have just took the first pup off my tiger lotus, i had 4 full leafs and 8-12 decent roots. all i did was, lift the pup till i saw the connecting "thingy" (its a technical term) between mum and pup. Then at about half way between mum and pup i cut it with a nice sharp pair of scissors.
both are doing fine and and have another new leaf coming through on the pup.
HTH :lol: