make a video of transplant want to see how it go's
If there is some kind of soil below the hydroton then carefully remove the hydroton pellets first. Then gently turn pot upside down with plant stem between fingers. Tap pot on the bottom to loosen and place in a larger container. Backfill with soil or medium of choice and water. In the future either use pellets or soil, not both.
You guys beat me by a hair. All pretty similar advice.Tip on side, gently pull/shake whole plant out, roll and remove all rocks that come off easily. Partially fill new larger pot with medium, pick up the plant from the base of the stem and the root ball, gently set on top of medium, hold stem with one hand, scoop additional medium around root ball and lightly compress until full to 1" above top of cube. Feed/water and wait.
Remove the outside layer of the cube if you can.