.
î12
TheA
to eater for.
.
“One last point on the use of natural Waters concerns b10l0g1cal
filtration, which is itself fully describedlat€r (p., 37).
_
Suffice it to
say“ here that mature natural water.in good condition is useful
,
initially‘ setting up a biological filter as it will help to seed the bed
With the required bacteria, Also, where an old bed is being washed
…
before being used again, mature water will scour away far lessof the,
'
desired b‘acteriological population than would fresh tap water,parti—'Ë
…cularly if the natural water is Of the same type as that to which the
bed is accustomed.
.
»
f
'
Distilledwater is usually only used to alter conditions in existing
;
envir0nments or to modify unsuitable Waters when setting up
enVironment. As produced commercially it is of no
use to aquatic
as it is chemically and biologically pure.
Its addition to any
_
envir0nnœnt‘ tends to neutralise the water by dilution, and it is
useful in arresting extreme degrees of hardness or ac1d1tyInsome
it is used as the basis of artificially constructed waters for
ŸspecialiSed purposes such as spawning environments for difficult
generally it should be ‘ considered
a neutraliser and
nothing more.
»
«
Air -
' —
_
‘
Two air-water interfaces exist in most “aquatic environments, namelyfÿ
that between the water
surface and the atmosphere 'above
aquarium, and— that between the Water and any' air artificiælly injected
-
into it. All air which comes into contact with the water must be
clean
andfree
pollutants which might either becOme dissolved
‘in‘the water or
cover the surface and thus“ prevent the norr‘n'al1nter
‘
'
changeprocesses from taking place—. In domestic surroundings, paint
fumes, insect sprays and hair lacquers frequently cause trouble
because they‘ are used in the same room as the aquarium
'
Pumped
caheasily become foul if the situation of thepumpls
such that it-draws in
or if it
Precautiôi‘iSÏ}
'againstthese troubles are siiple but mandatorÿ—;the ability _of7water
to
is__sO
make*this}a mattef0f Supreme
importance; D bmestic, garden m«ihdustfial
Ï sprays mù st not be used:
where they maybe carried “ito
'
the art
the aquar1um
Dust can effeCtiyely
a cover gl£srs; and
pumped air
fil—ter wool
before being 1n3ected - into“‘Ÿthe
‘
These
cause inco nven1€Cê when an aquar1um15 brought 1nto aneX1stmg
tions are to be avœded
‘
î12
TheA
to eater for.
.
“One last point on the use of natural Waters concerns b10l0g1cal
filtration, which is itself fully describedlat€r (p., 37).
_
Suffice it to
say“ here that mature natural water.in good condition is useful
,
initially‘ setting up a biological filter as it will help to seed the bed
With the required bacteria, Also, where an old bed is being washed
…
before being used again, mature water will scour away far lessof the,
'
desired b‘acteriological population than would fresh tap water,parti—'Ë
…cularly if the natural water is Of the same type as that to which the
bed is accustomed.
.
»
f
'
Distilledwater is usually only used to alter conditions in existing
;
envir0nments or to modify unsuitable Waters when setting up
enVironment. As produced commercially it is of no
use to aquatic
as it is chemically and biologically pure.
Its addition to any
_
envir0nnœnt‘ tends to neutralise the water by dilution, and it is
useful in arresting extreme degrees of hardness or ac1d1tyInsome
it is used as the basis of artificially constructed waters for
ŸspecialiSed purposes such as spawning environments for difficult
generally it should be ‘ considered
a neutraliser and
nothing more.
»
«
Air -
' —
_
‘
Two air-water interfaces exist in most “aquatic environments, namelyfÿ
that between the water
surface and the atmosphere 'above
aquarium, and— that between the Water and any' air artificiælly injected
-
into it. All air which comes into contact with the water must be
clean
andfree
pollutants which might either becOme dissolved
‘in‘the water or
cover the surface and thus“ prevent the norr‘n'al1nter
‘
'
changeprocesses from taking place—. In domestic surroundings, paint
fumes, insect sprays and hair lacquers frequently cause trouble
because they‘ are used in the same room as the aquarium
'
Pumped
caheasily become foul if the situation of thepumpls
such that it-draws in
or if it
Precautiôi‘iSÏ}
'againstthese troubles are siiple but mandatorÿ—;the ability _of7water
to
is__sO
make*this}a mattef0f Supreme
importance; D bmestic, garden m«ihdustfial
Ï sprays mù st not be used:
where they maybe carried “ito
'
the art
the aquar1um
Dust can effeCtiyely
a cover gl£srs; and
pumped air
fil—ter wool
before being 1n3ected - into“‘Ÿthe
‘
These
cause inco nven1€Cê when an aquar1um15 brought 1nto aneX1stmg
tions are to be avœded
‘