yikes heavy nitrates reeked havic in my reef

[Snappy]

Originally Posted by michika

For those of you who do large water changes, how do you do it without exposing your corals, assuming the corals are placed high enough that a larger water change would expose them?

I do the water changes through my refugium and shut it off with valves from my main tank while I do the water change but I am not set up for any more water than I already do at one time.