
MARINE AQUARIA 
Analyses have shown that seawater contains mineral salts of the 
following proportion, in 1000 parts: 
SOCMUMMCHVONG emt ier tas eis die dae 26.9 parts. 
Nia Westie CMOnGe: frei is'. cuedaie se seats Roots 
Dinerestvim isuliphates |): jo. es aka aa 29) et 
WaleintiesupOake wd cs aes aloe ea ots. 4 er 
Patascmmmnchionicdents. 10/08. have hl sao we ie 4° 
SMM PUOMICes =. thio a os th ee grado Wes 166) * 
POLASSiMmMNSMip Mapes en vas oes Pe oa | 
NINE Wet oot Re aR eR oe ee a 965.6“ 
1000 
ARTIFICIAL SEAWATER. Experienced marine aquariists prepare arti- 
ficial seawater with the following salts, the proportions given being for a 
volume of ten gallons, and the weights in Apothecaries’ weight, as this is 
the most convenient source from which they may be obtained. 
Sodium chloride (Tablesalt)...... 2p 825: 18 gr. 
IMagnesiunn chloride... 2. 2... ; Gar Sos 13 gr. 
Magnesium. sulphate... 2.52... 22. 2S Go: Le) Pour. 
WOrassitem su lphaters. 4.5 kee \es Me G52 DU LOek 
and sufficient wellwater to bring the whole to ten gallons. 
These proportions of salts, expressed in the Metric system, would be: 
Soatumrchlorders aac. she 642 elses 663 grams. 
Magnesrumrychionde-s. .ia350. ys: To es 
Migonesnimrsulphate; 20 1s. lo aaa 
Potasstumisulphate’sj.: 22). 622% a... 8: Tee AS 
Added to 265 litres of wellwater. 
The salts should be fresh and be kept in glass-stoppered bottles. The 
magnesium chloride deteriorates when exposed to the atmosphere, and the 
tablesalt should not be very moist. 
Each of the salts must be dissolved in a glass or porcelain vessel by 
stirring in a little water and then separately added to the wellwater, until 
the whole quantity 1s exactly ten gallons, or any desired part or multiple 
thereof, in the same proportions. The prepared seawater should be kept 
in a clean glass or stoneware vessel in a cool place and lightly covered for 
two or three weeks, and occasionally stirred to insure a complete solution 
and uniform mixture; after which it is ready for use. 
A solution of Turk’s Island salt of the proper gravity has been suc- 
cessfully used by the Fish Commission, at Washington, for small aquaria, 
but it is best to prepare the saltwater as above given. 
When the aquarium has been filled, it should be left undisturbed for 
a day or two, after which the water will be found to be clear and limpid. 
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