-
54
"
2Ec‘guipihent
ï “
=
'
,
:
Heating systems can be Classified into three basic
î’
'
1,_ ThdSe which heat the water directly from_inside the co”ntainer ‘Ï=ÏÏ
…
(immersion
»
,
,
which heat the base of the aquarium from underneath
_
(base heating)…
“
,
“3. Those
heat the air in the room containing the aquarium
(space heating).
'
'
_
By far the most popular method makes use of a combination of
immersion
thermostat and thermometer‘. This system is
,
simple, reliable and fairly easily installed without technical know'
ledge, provided a few basic points are
It is the onlypop,
ular method of heating the water from inside the aquarium, and
because of this and its almost universal use, the system will,be
dealt with at some length.
'
The Immersion Heating System
.
,
'
-
The çcdmbination ”of components used in this system comprises one
,
or ‘more immersion heaters, a simple thermostatic switch and a
'
thermometer. Each item is simple… and reliable and there has been
little alteration in their basic design for many years as, they are
functionally ideal (see Appendix I).
_
«
Heaters
_
,
…
,
,
"
‘
Immersion heaters consist basically of an electrical heating'element
contained in a heat—resistant, protective tube. A waterproof
cable.
carries current from the supply, a rubber bung seals the cable
into the tube and the whole device is evacuated by the makers
during assembly. Modern heater cables are insulated With PVC: and
thus the’problems which «arose in the past from—periShed rubber
“cables no longer occur.‘ Many h'eaters are,
supplied
'
-
with stiff, inouï—exible cables which break intèrnally ’if- they
rep€atedly
at one point
‘
.
…
Three mai—n typeS-‘of heater are available,
_
the short type mounted inside a Pyrex;it’est
,
.—
and
to
the ;‘lifÇe of “the ::—1élement
be; sho'rt6-nèd
’
,
? internal workingtemperature;
pOWerisbetter. Apô—s‘sibledisadvantage15thatshortsquatm0delscan
Ÿ
bemore difficult
ina_sparselyg furnished“ _aquariaŸ
'
'
shmmerkmds
gives ÎÎa,l;>:ettï‘er çdiSp er5ion of heat
butlsmore easVbr0ken1fknocked0rif anythmg lsdr0ppedon1t
.
Also,the “rubber bungdoesnotform
good seal
54
"
2Ec‘guipihent
ï “
=
'
,
:
Heating systems can be Classified into three basic
î’
'
1,_ ThdSe which heat the water directly from_inside the co”ntainer ‘Ï=ÏÏ
…
(immersion
»
,
,
which heat the base of the aquarium from underneath
_
(base heating)…
“
,
“3. Those
heat the air in the room containing the aquarium
(space heating).
'
'
_
By far the most popular method makes use of a combination of
immersion
thermostat and thermometer‘. This system is
,
simple, reliable and fairly easily installed without technical know'
ledge, provided a few basic points are
It is the onlypop,
ular method of heating the water from inside the aquarium, and
because of this and its almost universal use, the system will,be
dealt with at some length.
'
The Immersion Heating System
.
,
'
-
The çcdmbination ”of components used in this system comprises one
,
or ‘more immersion heaters, a simple thermostatic switch and a
'
thermometer. Each item is simple… and reliable and there has been
little alteration in their basic design for many years as, they are
functionally ideal (see Appendix I).
_
«
Heaters
_
,
…
,
,
"
‘
Immersion heaters consist basically of an electrical heating'element
contained in a heat—resistant, protective tube. A waterproof
cable.
carries current from the supply, a rubber bung seals the cable
into the tube and the whole device is evacuated by the makers
during assembly. Modern heater cables are insulated With PVC: and
thus the’problems which «arose in the past from—periShed rubber
“cables no longer occur.‘ Many h'eaters are,
supplied
'
-
with stiff, inouï—exible cables which break intèrnally ’if- they
rep€atedly
at one point
‘
.
…
Three mai—n typeS-‘of heater are available,
_
the short type mounted inside a Pyrex;it’est
,
.—
and
to
the ;‘lifÇe of “the ::—1élement
be; sho'rt6-nèd
’
,
? internal workingtemperature;
pOWerisbetter. Apô—s‘sibledisadvantage15thatshortsquatm0delscan
Ÿ
bemore difficult
ina_sparselyg furnished“ _aquariaŸ
'
'
shmmerkmds
gives ÎÎa,l;>:ettï‘er çdiSp er5ion of heat
butlsmore easVbr0ken1fknocked0rif anythmg lsdr0ppedon1t
.
Also,the “rubber bungdoesnotform
good seal