Aquarium Make-up: (excerpts from the book, “Aquarium Making“)
An aquarium is usually made of a glass or transparent plastic tank coupled with a variety of accessories and decorations in which fish or other water-related creatures live in captivity. There are bowl- shaped aquariums simply regarded as fish bowls. They are not large enough to host a considerable number of fish and are mostly without filters which make them less popular than regular aquariums.
In some communities keeping fish in bowls (especially the goldfish) has become illegal under ‘domestic animal welfare legislation' as there is a risk of stress and suffocation to the fish due to high de-oxygenation rate and poisoning by ammonia. In other words, goldfish have high oxygen needs and their high waste output makes these bowls inappropriate environment for them.
A simple aquarium design is shown in Figure above. A single airpump is meant to aerate three accessories: an external filter (1), a decoration (2) and a long airstone (3) via a cross-connector. A combination of stones, gravel and sand is part of the design. This aquarium has three artificial plants. The red thin lines from the cross- connector are a representation of the airhose. This is a basic design suitable for any aquarium within 36 inches in length, 12 inches wide and 15 inches high. A design of a tank greater than 36 inches in length will most likely require more accessories and extra connectors. We assume here that we already have the aquarium stand and a cover fitted with lighting.
Building the tank:
Aquarium tanks are usually built in such a way that the number of view sides are one or several. One-sided view could imply that the two other sides are backgrounds and the top and base views are triangular in shape. The next figure shows that we can achieve different tank shapes.
The all-glass type is built by joining sheets of glasses with silicone sealant (See Figure below). The commonest way is to firmly hold the glass frame with masking tapes at the four corners of the tank frame (this coupling process may involve 2 persons). The glass must have been cut accurately to the required dimensions to avoid eventual cracks or sudden breakages of the built tank due to pressure or lack of symmetry. The sealant is applied with the gun within the gap from bottom to top and smoothed with the tip of a finger once or twice (also from bottom to top). Assume you are smoothing with the tip of your finger a sticky substance between two planes at right angle to each other. It is best to use a colourless sealant for joining the glass sheets.
Best alignment practice: