I'm not really sure how to explain what I need. I have some watersport equipment which involves a long (15m) hose that has a large amount of water with a large amount of pressure. At the end, the water comes out of two ports, which elevates the rider. I want somebody's help in designing a canister. The canister will hold bio-degradable (must be 100% safe and clean when it enters the water) crystals that will turn the water the color of the crystals. I would like it to be available in different colors. I would like the canister to be very easy to refill or replace. The hose is similar to the hose and connections of a Jet-Lev or a FlyBoard. Please help.