Can I transplant the arrangement?

When you are changing the water out look at the roots to determine if they are becoming “root bound”.  If the roots appear to be knotted and formed into a pot-shaped mass then it is time to find a bigger pot or you can trim the roots back a bit. If you choose to re-pot all you need is a larger ceramic or glass pot.  Dump out the rocks, remove the plant and place it into the new pot.  Add rocks and fresh room temperature water and you’re done!