Aqua Gelz Starfish Lagoon Mega Playset. Aqua Gelz are magical liquids that transform into colourful, super fun, squishy creations! Mix the special powder with water. Squeeze the Aqua Gelz into the supplied moulds, then place the tray into the solution tank and watch as your creation transforms and pops out of the mould! Leave in the solution for a further 3-5 minutes to set, then you can play with your creation. Remember to keep your creations in cool fresh water otherwise they will dry out and shrivel.