Ü
,
‘
,
:Et1uip‘mènt
_
_
Ÿ "_
different being 24 and 49 sq. ft., respectively. Thus, the heatlosses
'
'
from the longer container will be far greater than thosefrom the"
other.
insulate all the surface areas bar the viewing
side but it must be rerhembered that many insulating materials are
hygroscopic and so if used in a damp or wet situation will soak up
water and lead to unpleasant conditions. As heat rises, it is normally
unnecessary to insulate underneath the base of an aquarium unless
several are stacked one above the other, when
it may be found that
a lower aquarium overheats those above.
'
Base Heating
,
'
,
Heating from below, through the base of the aquarium, was frequently practised in thepast using various forms of power. Gas, electricity,
steam pipes, paraffin — all have their uses and methods Of application.
The main requirement is that the base of the aquarium container
should be heat resistant, yet obviously still waterproof and able to
conduct the heat well.*Slate in quite thick sections was the most
popular material while metals were less often used because of con—
'
*
problems. Nowadays slate is expensive and hard to
obtain, and commercially built aquaria are certainly not generally
_
fitted up
in this way.
[
«'
There are several inherent disadvantàges in base heating. Theatrans=
fer of heat is impedèdby the base of the aquarium. and“any gravel '
layer. above it.… Therniostatic Control is only easily applicable to
,
'
electrical methods, or to gas heating if a little trouble is taken." Insulation is required to prevent 10ss of heat to the surrounding air,
transfer of heat to the container by the source must be
.
sloWand even. Direct gas systems and steam
methods't€quire
—
constant
experienced hand ‘trirhmi‘ng’ to
_
_
_“
and to“ minimise sudden changes caused
in the ambient c0nditions, and are only reliable if a °reSpbnSible
(person
is present _‘-most of the\time,f”br at least is available quickly.
Ï
_
;%Parziffin, even "
‘clean’ sort, pr0duces“fur€5 and
,
.
,and is
for'emergèncy Use. Gas fumes can also be "troublesome
and,…necessitate draughty Conditions f0r their,
inlosses.ï
…
"1
—w
>
.:
;
.
,
heating is "usually used in “situations
Which— an internal ‘
…
heating system
fry or ‘=creatur.eS,ï«such
J
Ï
orwhereonly minimal
When __p‘reventing
C01dWater envirOnmets
frèezing. It
;â.‘SΑW&SÎGfŒl-ÎÊ@S spaëe
'
heatlng,and1tcanallowa morepleasantatmospherefortheauar1st
J
JJJ
‘
,,J;;J;
,,
:,
,?
___
,
‘
,
:Et1uip‘mènt
_
_
Ÿ "_
different being 24 and 49 sq. ft., respectively. Thus, the heatlosses
'
'
from the longer container will be far greater than thosefrom the"
other.
insulate all the surface areas bar the viewing
side but it must be rerhembered that many insulating materials are
hygroscopic and so if used in a damp or wet situation will soak up
water and lead to unpleasant conditions. As heat rises, it is normally
unnecessary to insulate underneath the base of an aquarium unless
several are stacked one above the other, when
it may be found that
a lower aquarium overheats those above.
'
Base Heating
,
'
,
Heating from below, through the base of the aquarium, was frequently practised in thepast using various forms of power. Gas, electricity,
steam pipes, paraffin — all have their uses and methods Of application.
The main requirement is that the base of the aquarium container
should be heat resistant, yet obviously still waterproof and able to
conduct the heat well.*Slate in quite thick sections was the most
popular material while metals were less often used because of con—
'
*
problems. Nowadays slate is expensive and hard to
obtain, and commercially built aquaria are certainly not generally
_
fitted up
in this way.
[
«'
There are several inherent disadvantàges in base heating. Theatrans=
fer of heat is impedèdby the base of the aquarium. and“any gravel '
layer. above it.… Therniostatic Control is only easily applicable to
,
'
electrical methods, or to gas heating if a little trouble is taken." Insulation is required to prevent 10ss of heat to the surrounding air,
transfer of heat to the container by the source must be
.
sloWand even. Direct gas systems and steam
methods't€quire
—
constant
experienced hand ‘trirhmi‘ng’ to
_
_
_“
and to“ minimise sudden changes caused
in the ambient c0nditions, and are only reliable if a °reSpbnSible
(person
is present _‘-most of the\time,f”br at least is available quickly.
Ï
_
;%Parziffin, even "
‘clean’ sort, pr0duces“fur€5 and
,
.
,and is
for'emergèncy Use. Gas fumes can also be "troublesome
and,…necessitate draughty Conditions f0r their,
inlosses.ï
…
"1
—w
>
.:
;
.
,
heating is "usually used in “situations
Which— an internal ‘
…
heating system
fry or ‘=creatur.eS,ï«such
J
Ï
orwhereonly minimal
When __p‘reventing
C01dWater envirOnmets
frèezing. It
;â.‘SΑW&SÎGfŒl-ÎÊ@S spaëe
'
heatlng,and1tcanallowa morepleasantatmospherefortheauar1st
J
JJJ
‘
,,J;;J;
,,
:,
,?
___