Glaucus; Or, The Wonders of the Shore

This is Mr. Gosse’s method. But Mr. Lloyd, in his “Handbook to the Crystal Palace Aquarium,” advises that no weed should be put into the tank. “It is better,” he says, “to depend only on those which gradually and naturally appear on the rocks of the aquarium by the action of light, and which answer every chemical purpose.” I should advise anyone intending to set up an aquarium, however small, to study what Mr. Lloyd says on this matter in pp. 17– 19, and also in page 30, of his pamphlet; and also to go to the Crystal Palace Aquarium, and there see for himself the many beautiful species of sea-weeds which have appeared spontaneously in the tanks from unsuspected spores floating in the sea-water. On the other hand, Mr. Lloyd lays much stress on the necessity of aërating the water, by keeping it in perpetual motion; a process not easy to be carried out in small aquaria; at least to that perfection which has been attained at the Crystal Palace, where the water is kept in continual circulation by steam-power. For a jar-aquarium, it will be enough to drive fresh air through the water every day, by means of a syringe.