PLANTS
Anacharis: Fair oxygenator—planted or floating—needs abundance of light.
Ludwigia: Fair oxygenator. Leaves—top green, underneath red.
Sagittaria: Excellent oxygenators, three varieties: NATANS—long narrow leaves; GIGANTEA—broad stocky 8″ leaves; SUBULATA—(dwarf) 4″ to 6″ narrow leaves.
Cabomba: Little value as oxygenator—fanlike green leaves.
Hair Grass: Fair oxygenator—rapidly covers floor with 4″ grassy needles.
Southern Spatterdock: Ornamental—broad bright green leaves.
Vallisneria: Excellent oxygenator—15″ long—multiplies rapidly by runners.
Myriophyllum: Ornamental—excellent for spawn of adhesive egg layers.
Salvinia: Floating—¼″ leaves covered with velvety hairs.