I've moved into a house with an outdoor goldfish pond/water feature
(220 x 55 x 15cm). This contains two underwater halogen lights which
look great at night, but knowing how hot these get normally (in air)
are they likely to heat the water enough to be any danger to the fish?

I doubt it. I have a 20 watt Halogen in a 20 gal half barrel, anbd the
other two half =barrels each have 10 watt halogens in them...thats a
total of40 watts of lights, plus whatever heat a Pondmaster 5 puts off
and its all setting in thr sun all day long in hot sunny alabama,
and my temps stay in low 80's most time.......On those occassions
temps mnay get higher I simply put up the umbrella for some shade. I
have two wakins in the barrel with the 20 watt, and assorted tropical
fish (gourami, betta, guppy, platy, paradise, angles etc) in the lower
two barrels.

On 9 Aug 2005 17:35:14 -0700, wrote:

===I've moved into a house with an outdoor goldfish pond/water feature
===(220 x 55 x 15cm). This contains two underwater halogen lights which
===look great at night, but knowing how hot these get normally (in air)
===are they likely to heat the water enough to be any danger to the fish?


==============================================
Put some color in your cheeks...garden naked!
"The original frugal ponder"
~~~~ }((((o ~~~~~~ }{{{{o ~~~~~~~ }(((((o

" wrote:

I've moved into a house with an outdoor goldfish pond/water feature
(220 x 55 x 15cm). This contains two underwater halogen lights which
look great at night, but knowing how hot these get normally (in air)
are they likely to heat the water enough to be any danger to the fish?


Why don't you put a thermometer in and check? I doubt they will be an issue
though.


San Diego Joe
4,000 - 5,000 Gallons.
Koi, Goldfish, and RES named Colombo.