,
5233
'
'
'
‘
: '
“'
'
'
easily scratched. Algae seem to get into rather than on to
iii—{t
yellows with age.
…
.
'
_
Ü
”»
development
the future will probably be the
with one side of glass, perhaps moulded in, and the whole inner
surface made extremely smooth to reduce algal growth.
'
Aquarium containers used for permanent environments should
“be as large as possible for the “reasons expounded elsewhere (p. .6).
In the
sizes, strength and rigidity are critical considerations,
especially as the depth of water increases. The weight of water,
ï Î
rocks and gravel is an important factor, particularly if the aquarium
‘
is Supported on a high stand and a ‘sensitive’ floor. Domestic installations often suffer from the ’effects of slammeddoors and children
'
jumping on
wooden floors. A gallon of water weighs about 10 lb
and there are six and a quarter gallons per cubic foot, so a container
size 36 X 12 X 12 inches (90 X 30 X 30 cm) holds approximately 185
‘
lb (85 kg) of water, and to this must be added its own weight and,
'
the weight of ancillary equipment. Aquarium stands must therefore
.
bes‘trong and rigid, and tall stands should be bolted to the
:
prevent them from tipping or rocking. -—
.
"
‘
,
The proportions “of the container l should suit the particular…
—'
aquatic environment which is being
For
ornaïnental
‘
aquarium, assuming it is big enough to-provi—‘de the required vOlume
and surface area, considerations}of perspectiVe and proportion cari
be important. _Ihe standard shop size of 24m.
(wide)
'
_
15 in. (deep) (60 X 30 X30 cm.) illustratesthe point. Although
it 'is asmall'aqüarium, its dimensions are such that itseerñs to give ,
the impre3sion of size and
evenwhen empty; Long and
_
or thin and,, tail containers may not look
'
[
Some effdrt to acquire a container of pleaSing prop=ortionsis“undoubtf—î_ :
…
edly worth
Triangular containers fill corn—efs nicelyan‘dpreseñt
frontal expanse
to the—‘ vieWer,but their surface area
is limited;
apr0perly pôpulated triangulaf aquarium "always seems to be
‘
of fishes—irirelatioh to the size of the front_glaS& Round
containers give…a distorted
contehtsand—thè
have a poor
Ï
'
their, use,
'ire‘co‘mm'ended.
,Èrîe‘quently
;to; make \aquariawfrom
but these
'
are
{generally ;dueÏ toma1ntenance
'
associated with the
’
;
»
Ïï
The Ll;;depth ÏÏof theaquariumcontributes grèatlyñtb
Wüghtand ialsï0* Inuences thegrowth @f ta11 plants These two f
5233
'
'
'
‘
: '
“'
'
'
easily scratched. Algae seem to get into rather than on to
iii—{t
yellows with age.
…
.
'
_
Ü
”»
development
the future will probably be the
with one side of glass, perhaps moulded in, and the whole inner
surface made extremely smooth to reduce algal growth.
'
Aquarium containers used for permanent environments should
“be as large as possible for the “reasons expounded elsewhere (p. .6).
In the
sizes, strength and rigidity are critical considerations,
especially as the depth of water increases. The weight of water,
ï Î
rocks and gravel is an important factor, particularly if the aquarium
‘
is Supported on a high stand and a ‘sensitive’ floor. Domestic installations often suffer from the ’effects of slammeddoors and children
'
jumping on
wooden floors. A gallon of water weighs about 10 lb
and there are six and a quarter gallons per cubic foot, so a container
size 36 X 12 X 12 inches (90 X 30 X 30 cm) holds approximately 185
‘
lb (85 kg) of water, and to this must be added its own weight and,
'
the weight of ancillary equipment. Aquarium stands must therefore
.
bes‘trong and rigid, and tall stands should be bolted to the
:
prevent them from tipping or rocking. -—
.
"
‘
,
The proportions “of the container l should suit the particular…
—'
aquatic environment which is being
For
ornaïnental
‘
aquarium, assuming it is big enough to-provi—‘de the required vOlume
and surface area, considerations}of perspectiVe and proportion cari
be important. _Ihe standard shop size of 24m.
(wide)
'
_
15 in. (deep) (60 X 30 X30 cm.) illustratesthe point. Although
it 'is asmall'aqüarium, its dimensions are such that itseerñs to give ,
the impre3sion of size and
evenwhen empty; Long and
_
or thin and,, tail containers may not look
'
[
Some effdrt to acquire a container of pleaSing prop=ortionsis“undoubtf—î_ :
…
edly worth
Triangular containers fill corn—efs nicelyan‘dpreseñt
frontal expanse
to the—‘ vieWer,but their surface area
is limited;
apr0perly pôpulated triangulaf aquarium "always seems to be
‘
of fishes—irirelatioh to the size of the front_glaS& Round
containers give…a distorted
contehtsand—thè
have a poor
Ï
'
their, use,
'ire‘co‘mm'ended.
,Èrîe‘quently
;to; make \aquariawfrom
but these
'
are
{generally ;dueÏ toma1ntenance
'
associated with the
’
;
»
Ïï
The Ll;;depth ÏÏof theaquariumcontributes grèatlyñtb
Wüghtand ialsï0* Inuences thegrowth @f ta11 plants These two f