I think everyone is taking this a little bit too specific. Lets take a look at nature and make just a general statement that I think everyone can agree with. Nature does not do anything in vain and the simplest answer tends to be the right one.
Lets take fire for example. Just plain and simple, hot fire. It needs three things to make it and make it larger.
1- oxygen
2- fuel
3- ignition source
So, as far as I see it, those points made above in the first post of this thread are quite accurate. Youll notice that if you do any research on population booms, they have a few things in common.
1- high levels of oxygen (like above)
2- excess of food (fuel)
3- sunlight (everything living usually needs sunlight....)
4- room to move about
I imagine that for bacteria....you dont need much room.......so ill consider that point mute. However, the other issue of temperature comes into play. Think about yourself, would you want to get all frisky with someone if it was cold outside? I dont think so, so i say that raising the temperature in the aquarium is a good idea.
I agree with all of those points on the first post. Some of them are just doing a different method to achieve the same goal though.