I remember reading somewhere that after so long it is necessary to change out the sand in out reef tanks. Why is this? How long can you go before needing to do it? Isn't it enough to vaccum the sand bed every few months?
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
... and all of those things excrete waste back into the sand bed.when I feed my tank the sand bed looks like a grave yard on the night of the living dead. snails pop up everywhere and go to town. Then the mated pair of diamond sleeper gobies I have go thru and turn the bed over about 100X a day.
every 2 to 3 years, even though it may stay white old sand holds po4 and no3, and slowly leaches back into tank as it breaks down