Ok Im new to all this and i have a ten gallon and im going to go get a 55 gallon on the 5th so i need to know how often do i do a water change and how do i do it. Also how do I add water that has evaporated because i dont want to use tap water and kill my fish.
I syphon my gravel once a month, and do weekly partial water changes sometimes bi-weekly but I have a 55 gallon and it only has 4 mollies 4 guppies, a frog, pleco, and some ghost shrimp.
Weekly 10% water changes work fine with tap water just use tap water conditioner such as Stress zyme, AquaClear, Prime on the gallon you put back in the tank and it will be fine, just make sure the temperature of the new water is the same as the tank. Now, of course when you get the 55 gallon you will change more than a gallon I usually change 5 gallons a week in my 55.
changing 10% of the water shouldnt hurt your little guys at all.
Good Luck, and Welcome to the forums!