Choosing a Pond or Fountain Light: LED or Halogen?
Basically, there are two kinds of lights available for ponds,
halogen lights (which have been around for quite a while), and
LED, which are more recent developments. Here are some
differences between the two. Note that here we are addressing
12volt systems only.
Some advantages of LED:
Focused light Solidly built and hard to break, durable Last
twice as long as best fluorescent bulbs and 20 times longer than
incandescent bulbs LEDs also are more efficient per watt,
produce greater lumens per watt than incandescents or halogen
bulbs. LEDs can be built in a number of colors so do not require
a filter, which greatly reduces efficiency of light. Finally,
LEDs run cooler and are less likely to warm the pond or for
their seals to get damaged because of the cooler running
temperatures.
Some Disadvantages:
LED lights are still quite expensive and it is taking a while
for the price to drop. Also, it is difficult to find an LED
system that produces high wattage. Fountain Techproduces
the highest pond light wattage we know of at 8 watts per light
fixture. And a total of 130 separate LEDs are used in the
fixture to do this!
Halogen:
Some Advantages
These are good lights, not as durable as LEDs but pretty durable
all in all. The most common sizes are 10 watt, 20 watt, 35 and
50, though you can also find 75 watt lights. You can usually buy
lens covers to change the color of the light, though lens
filters do reduce the luminosity a great deal. In general, it is
more efficient to use colored bulbs. Still, you will find less
light from a colored bulb than a clear one. LED is the way to
keep luminosity efficient when using colored light. You can find
a good selection of both at Cheap Pumps. Some
Disadvantages:
These light bulbs don't last nearly as long as LEDs, though they
still last a long time. They burn quite hot and sometimes the
high temperatures burn the O-rings and the fixtures leak.
About transformers:
Transformers that will be used outside (as almost all will!)
really need a 3-prong plug. Beware of the "for indoor use only"
transformer as, in order to find an indoor plug and then run the
cable to your fixture outdoors these are often more trouble than
the price savings is worth. Find a UL-approved transformer that
can be used in or out of doors. That's our recommendation.