during the cycling how often should i do a water change if i do one at all on my 10 gal nano it is in its second day of cycling i have 20lbs of live sand and 13lbs of pre-cured Fiji live rock
Any water changes will prolong your cycle. The only time you may want to do a water change during cycling is if you are cycling with livestock (I highly recommend against this), otherwise no water changes until the cycle has completed.
never change the water during the cycle.. wait until amonia, nitrite, and nitrate are zero.. if amonia and nitrite reach zero and nitrates are not zero but low you can do a water change then (at the end of your cycle) to remove the nitrates...