Color and Interest to Water Gardens, 
Special Collections of Tropical Fis hes 
HARMONY COLLECTION 
Suitable for a 10-gallon aquarium. 
Five distinct types of fish that will 
live peaceably together making an 
harmonious, happy family collec¬ 
tion. 
1 pr. Helleri (Swordtails) .$0.75 
1 pr. Scalare (Angel Fish). 2.00 
1 pr. Black Platy (Moons).....75 
1 pr. Danio rerio (Zebra Fish).SO 
1 pr. Tetra von Buenos Aires 
(Hemigrammus caudovitatus).. .75 
12 Selected Aquarium Plants. . 1.00 
1 Shipping Can .SO 
$6.25 
Collection Price $5.00 
Every Aquarium to be kept in proper order and 
balance and insure healthy active fish should have 
the Aquarium plants included with our Harmony 
Collection of Toy Tropicals. We select twelve 
choice aquarium plants in variety sufficient to 
plant and balance a 10 to 12-gallon aquarium. 
For the accommodation of the Harmony Col¬ 
lection of Tropical Fish and Plants we recommend 
our 11-gallon, Style 903, Cast Aluminum Aqua¬ 
rium. This Aquarium will blend harmoniously 
with any decorating scheme. A sturdy well-built 
article having a polished cast aluminum frame, 
heavy bulb edge glass, heavy processed glass bot¬ 
tom and guaranteed workmanship. (See illustra¬ 
tion page 23.) 
No. 903—I l-gollon .$12.00 
Ornamental Iron Stand. 8.00 
For those wishing a less expensive Aquarium 
we suggest our Style 150 Window Ledge Aqua¬ 
rium—10-gallon—$5.50. (See page 23.) 
LARGE AQUARIUM 
COLLECTION 
This especially-priced assortment of pop¬ 
ular Toy Tropical Fishes is a collection 
ideal for aquariums of eighteen to twenty 
gallons of water. No. 911 Aquarium, page 
22 . 
2 pairs Guppys . $0.50 
2 pairs Black Platys . 1.S0 
2 pairs Red Platys . 1.50 
2 pairs Zebra Fish . 1.00 
1 pair Swordtails .75 
1 pair Tetra von Rio. 75 
1 pair Jet Black Mollienisia_ 3.00 
1 pair Blood Fins. 1.00 
1 Shipping Can . 50 
Regular value.$10.50 
But we offer these for the low price 
in COLLECTION, 
only_ 
$ 8.50 
IDEAL COLLECTION 
OF TOY TROPICALS 
An ideal assortment of Toy Tropical 
Fishes for a ten-gallon aquarium. Ten 
beautiful Tropicals (5 pair), both live- 
bearing and egg-laying types, that afford 
a choice happy family Collection. 
1 pr. Giant Danio .. $0.75 
1 pr. Tetra von Rio. 75 
1 pr. Bloodfins . 1.00 
1 pr. Rosy Barb .75 
1 pr. Red Platy . 1.00 
1 shipping can.50 
$4.75 
Collection Price, only. $4 
The Balanced Aquarium. 
The term “balanced” is used to describe that 
condition in an Aquarium wherein the activities and functions of the fish are equaled 
by those of the plants. The Aquarium should be well planted, as the plants give off 
oxygen in sunlight or in good, strong light, and take in carbon dioxide which the fish 
exhale. Properly arranged, an Aquarium for either Goldfish or Tropical Fish need 
not have the water changed. Allow twenty square inches of water surface per inch of 
fish body for Goldfish, or two inches of body per gallon of water. When more Gold¬ 
fish are kept, some water should be dipped out when they gasp at the top, and fresh, 
cool water added. In small Aquariums the water should be changed quite often, de¬ 
pending on the number and size of the Goldfish. 
Tropical Fishes will do well even when crowded. They are native to warm waters wherein the 
oxygen content is usually very low. They therefore require little oxygen. However, their tanks 
should be well planted to provide a hiding place for the young. When well balanced, the water in 
the Aquarium need never be changed. Add for evaporation only in balanced Goldfish tanks and in 
all Tropical tanks. 
Scavengers should be introduced into every Aquarium. Snails are particularly useful in keeping 
the water and glass clear. They will also help to keep any fish food that may have fallen on the 
bottom cleaned up. 
Should the water tend to become green, cut down the amount of direct light or sunlight the 
Aquarium gets each day. Very often a green condition will clear up of its own accord in a few 
days. This is the most desirable way to get rid of it, as it is likely to be a considerable period before 
that Aquarium will again become green; whereas those tanks cleared chemically or by flooding soon 
become green again. 
FEEDING—This is an important matter for all types of fish kept in the Aquarium. We list 
several fish foods (see page 30), all tested by us and used for feeding our own stock. We suggest 
their use. Feed Goldfish every other day about as much as they will take in five minutes. If you 
would keep Goldfish in good condition, feed sparingly. 
Feed adult Tropical Fish once a day about as much as they will eat in ten minutes. Avoid excess. 
Baby Tropicals should be fed two or three times a day. For the former, use our Tropic Food No. 1, 
for the young fish our Tropic Food No. 2. (See page 30.) 
Be sure to remove all food that settles to the bottom of the Aquarium, as this decaying food will 
sour the water. 
HOOSIER. AQUATIC GARDENS 
27 
