first off welcome. you shouldnt need to do too much at all to get your cons breeding. just put a male and female together and provide a decent nesting spot. i've found they like a smooth cave to spawn in. id just stick to their normal water perameters. i dont think you'll need to raise the temp or anything. as long as its in their normal range they should be ok. how often do you currently do water changes? you can pretty much stick to the same routine if it is correct and working for you. just avoid vacuming whilst there are eggs/fry in the tank. I haven't found diet has had alot to do with encouraging them to breed, so id probaly leave their diet as is. what are you currently feeding them?