I've bought everything needed for my new 75-gallon planted freshwater aquarium except for one item, a heater. I've read multiple posts, articles, top 10 lists, and have scoured through Amazon reviews but I'm left with nothing. Each and every heater I see has a handful of reviews showing exploded/broken heaters or heaters that have burned up an aquarium. Is this just normal? Do most people have success with heaters but a rare few have these incidents where a heater fails catastrophically? Should I just pick one and see what happens? Any solid recommendations (with link) would be welcomed. Also, I have no preference about one heater or two smaller ones (I've read enough posts to realize 1 v.s. 2 is a touchy topic but I understand both sides).