Sewer Crystals

Sewer Crystals were found on the planet of Aqua-tos. There is 101 total in the Aquatosewers and you can exchange them to the plumber for bolts. The Plumber claimed that he needed them to make a necklace for his wife, and every sewer crystals = 2,000 bolts. There is very little known of how sewer crystals are made, but they are found in the bouls of Biomass. Although they could be made up of Eco from the Jak and Daxter series.