Homemade Pond Heater

homemade
Made at home, rather than in a store or factory
homeMADE is an Australian reality television series that airs on the Nine Network. It premiered on 10 May 2009, and episodes air twice weekly on Tuesdays at 7:30pm and again at 9:30pm. The series is presented by David Heimann, who also acts as a mentor to the contestants.
Made in the home; Made by oneself; In a simple style as if made at home
made or produced in the home or by yourself; "homemade bread"

heater
A heater is object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Heaters exists for all states of matter, including solids, liquids and gases.
A conductor used for indirect heating of the cathode of a thermionic tube
A person or thing that heats, in particular a device for warming the air or water
A fastball
device that heats water or supplies warmth to a room
fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"

pond
Hold back or dam up (flowing water or another liquid) to form a small lake
a small lake; "the pond was too small for sailing"
Pond was a grunge band from Portland, Oregon. They formed in 1991 and broke up in 1998. They were signed to Sub Pop (first two albums) and the Work Records sub-label of Sony Records (last album).
(of flowing water or other liquids) Form such a lake
A pond is a body of standing water, either natural or man-made, that is usually smaller than a lake.