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A long-handled swab for cleaning the inside of the jar.

6. A siphon, or merely a piece of soft rubber tubing, to draw off the water in emptying tank.

Much elaborate and unnecessary equipment is offered by dealers in aquarium supplies. The essentials are named above. Most of these articles can be made at home; the others may often be bought at a drug store.

Wholesale houses carrying druggist's supplies usually can furnish such jars as are required. There are several firms in New York City.