. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Aquariums; Goldfish. 232 AQUARIUM APPLIAXCES of cheesecloth suspended in the aquarium. The illustration will show how this may be done. The four corners should be weighted down with bits of lead or stone sewed in. The plants and spawning fish are simpl_v transferred into the net. Confined in this compara- ^. Fig. 219. Net ti\ely small space, the chances of the eggs becoming fertilized are increased, while the netting is sufficiently open to allow the aquarium \^â ater to flow slowly t
. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Aquariums; Goldfish. 232 AQUARIUM APPLIAXCES of cheesecloth suspended in the aquarium. The illustration will show how this may be done. The four corners should be weighted down with bits of lead or stone sewed in. The plants and spawning fish are simpl_v transferred into the net. Confined in this compara- ^. Fig. 219. Net ti\ely small space, the chances of the eggs becoming fertilized are increased, while the netting is sufficiently open to allow the aquarium \^â ater to flow slowly through it and prevent suft'ocation. In this way the large amount of dirt usually stirred up in an aquarium at spawn- ing time, and which can do the adhesive eggs no good, is entirely a"\'oided. The size of the net will depend somewhat on the propor- tions of the aquarium, but the capacity of net (portion in water) should be about twelve to eighteen inches long, ten inches wide, and ten inches deep. In constructing, allow extra material for space between top frame and surface of water. Constant Aquarium Filter. This device is for use in connection ^\-ith the air pump referred to on page 2?i^. It is capable of a num- ber of ^â ariations, once the principle is understood. There are two columns of water in the tubes, one solid and one punctuated hv air bubbles, thereby making it the lighter. This causes it to rise and therefore establish circulation as long as air is supplied. A 3-g-inch diameter glass surgical drain is shown at A. This should contain about eight small openings and be suspended two inches above the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Innes, William T. (William Thornton), 1874-1969. Philadelphia, Innes
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Keywords: ., bookauthorinneswil, bookcentury1900, bookdecade1920, bookyear1921
