three cm of grownup fish size per four litres of water (i.e., a 6 cm-long fish would wish about eight litres of water). Please assist improve this text by including citations to dependable sources. Some aquarists, nevertheless, have constructed aquaria of many thousands of litres. Around 1908, the primary mechanical Aquarium air pump was invented, powered by working water, as a substitute of electrical energy. The introduction of the air pump into the hobby is considered by several historians of the interest to be a pivotal moment in its growth.
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