Information about Saltwater Aquarium Water Changes

Water changes are an important part of maintaining good, as well as correcting water quality problems in saltwater aquariums. Since there are no set rules for when, how much and often this task should be performed, research aquarists recommendations, then combine this information with how your own system runs to come up with a formula and routine that works best for you.

Water Changes

Water Changes - The Best Medicine for your Saltwater Aquarium? Are they? Or are there better methods to accomplish the same goal?

Water Change While Your Tank is Cycling?

FAQ - Should I do a water change while my tank is cycling? The quick answer is "NO". Here is why.

Should You Perform a Water Change During the Cycle?

Water Changes Poll

Participate in this quick poll created by your Guides to tell them and other aquarists how often you perform water changes, or just view the polling results to get a consensus of how often others do them.

Vote in the Water Changes Poll and See the Results

Rapid Nitrate Reduction Water Change Method

Stan describes his water change method that can reduce high accumulated nitrate in saltwater aquariums quickly and safely, and includes an animated graphic of the process.

See the Rapid Nitrate Reduction Water Change Method

Tap Water Purification Methods

From your About Guides, here are methods for how to purify tap water before using as make-up or top-off in saltwater aquariums, as well as a list of other alternative fresh water sources one can choose to use instead.

See Tap Water Purification Methods