There are often a bunch of questions about 'how do I feed my recently acquired very expensive pleco?' The below is a link to an article by Larry Vires on how he sets up to breed these fishes, notably gold nuggets and contains much useful info...., notably the quote 'I am not aware of any true herbivores within this family' - I'm not sure I'd agree with this, but I don't have his success rate...
http://www.planetcatfish.com/shanesworld/reproduction/breeding_plecos_lecture.htm
There's not much info here about temperature, though there are hints that oxygen is very important, but it's a start
http://www.planetcatfish.com/shanesworld/reproduction/breeding_plecos_lecture.htm
There's not much info here about temperature, though there are hints that oxygen is very important, but it's a start