09-16-2011, 04:19 PM
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Depending on where you look you will hear different thoughts on water changes and how much or how often. When I started I orginally was doing 25% on my tank. After being here on the forums for awhile and reading others experiences, and the reasons why larger water changes are more benificial I have increased my water changes to 40 to 50%. With the larger water change you are removing the waste and the chemicals that build up in the water, and keep the water cleaner for the fish. There are many members here who have been keeping fish longer than I have and have been doing 50% water changes. They have healthy tanks and fish, so it is from their examples and experience that I base what I decide to do with my tank. With vacuuming the gravel, do you have live plants in the tank? If you do than doing a deep vacuuming on the gravel is not necessary and actually is not good for the plants, when distrubing their roots. If you do not have plants in your tank than definitly you will want to vacuum the gravel. Some people will vacuum all the gravel with each water change while others will vacuum one half one week, and then the other half the next week. With vacuuming the gravel this will help in keeping you from having a build up of gunk in the bottom of your tank, and will help to keep your water parameters good.