Front caption: How to care for salt water aquarium. Water and marine plants must be used with marine animals. Loss through evaporation may be replaced with fresh water from the faucet as most of the original salts remain. Water may be aerated by removing a little and allowing it to fall back from a height of several inches, or may be siphoned off from the bottom and used again after filtering through cheesecloth. The best plants are sea lettuce and red algae. Sea lettuce should be buoyed with bits of cork to cover most of the surface and allowed to hang down on the sides nearest the light. Clean white sand or pebbles and a few stones should be / placed on the bottom. Round glass aquaria are best and an 8-gallon jar most desirable. No direct sunlight should strike the aquarium in summer, little in winter. Northern white coral, two or three each of brown and white anemones, prawns and minnows, will thrive, with a small clam to clarify, and half dozen mud snails for scavengers. Very small crabs and mussels may be introduced, also barnacles and tube-dwelling worms. Four animals to the gallon are enough. Desirable food is chopped clams, mussels, dried shrimp or dessicated codfish after soaking out the salt. Uneaten food should be siphoned off and dead animals and plants promptly removed.