The materials needed for clear casting are water clear casting resin, catalyst (hardener), measuring syringe, plastic mixing cups and a mould. Opaque or translucent pigments can be used to colour the resin if desired. Wet and dry paper, and polishing compound, will also be useful to finish off the casting. Finished castings can be filed or sawn, A protective mask should worn to shield the eyes and mouth.
"Since I'm getting a lot of the same questions, I'll answer them here. - The water is just clear resin. - The fish are made from polymer clay. - No, the animals are not real. - This was done over the course for three days. - As the koi ponds are one of my popular items, I will not be making a tutorial or explaining how to make parts of them. Sorry!"