sorry! There are too many questions, some of which I don't know, so I can only tell you what I know. The breeding of guppies has little to do with heating rods. If a guppy is pregnant, the female will have a black fetal spot on each side of her abdomen. In addition, guppies belong to the family Ovipovividae, so they are small fish when they are born. However, the female fish should be isolated in time after giving birth to the small fish, because the female fish will be very hungry after giving birth and will eat their own small fish. It is best to feed guppies with worms. Your parrot fish and map fish are good for feeding bread worms, but you'd better feed some live fish and shrimp. Besides, you feed too often. You can feed it twice a day at most.