The Salton Sea could be an ideal bacteria breeding ground. Detected levels are low so far, but elsewhere, people and pets have died. Hot weather is on its way, and with it, potentially toxic bacteria could bloom rapidly in California’s largest lake, the Salton Sea, and other waters on the receiving end of runoff from farms and golf courses or sewage spills. With temperatures across the desert expected to climb high into the 90s by Monday, experts say telltale signs will quickly appear.  An algal bloom at the Salton Sea. While most are harmless, some can contain dangerous toxins.(Photo: Courtesy/Jasmyn Phillips) Algae mats, foamy scum and off-color water all can contain microscopic cyanobacteria that gobble up fertilizers or waste and, using the sun for photosynthesis, explode with new growth. While many of the bacteria are harmless, some spawn nasty toxins that can cause convulsions, liver damage and other serious health concerns, officials say.  “As we head into warmer weather, what people should look for is discoloration that doesn’t match surrounding water, especially scum or foam on the surface or the shoreline. Those are the really possibly hazardous areas you ...