Water Changes - 55 gallon tank

chevysoldier

Like jeaninel said, you'll probably need to do 25% water changes about daily, depending on what your tests read. I have a 50 gallon, not planted and I do about a 50% every 2 weeks.

Byron

Yes, there is a big difference between water changes during cycling and regular water changes in an established tank. During cycling the ammonia and nitrite test governs how often a water change is needed. Once the tank is cycled, a regular weekly water change is strongly recommended. The volume can vary depending upon several factors as others have mentioned, but doing 40-50% weekly will certainly not hurt your fish regardless of the factors.

And, welcome to Tropical Fish Keeping forum.

Byron.