Today, Australians of Anglo and other European descent are the dominant majority in Australia, estimated at 85â92% of the total population. Historically, European immigrants had great influence over Australian history and society, which resulted in the perception of Australia as a Western country. Since soon after the beginning of British settlement in 1788, people of European descent have formed the majority of the population in Australia. The majority of Australians are of British â English, Scottish, Welsh, Cornish, or Manx â and Irish ancestral origin (grouped together as Anglo-Celtic).
Another more common reason, is that some rocks or gravel are composed of materials that can cause a change in the pH and hardness of your aquarium water, which in turn can be harmful to your fish.
Siphon to Clean Aquarium Gravel. Clean the gravel next, by using a water siphon to vacuum away the debris. There are several types of siphons available, all of which work essentially the same. Consider the Python because it draws dirty water directly into your sink, thus eliminating the need for buckets.