Mass Coral Death

[ScubaGirl]

Yes, I run a canister filter, run carbon all the time, change it about once a month. Running an nitrate reducer in there now but can't remember what it's called off hand. It's a rechargeable packet like thing.

The powerheads have the sleeves. I wasn't running them and then ran them the last 2 water changes with brand new sleeves each time. They are now out again because my friend who owns the LFS said they can be a source too.

I'm pretty sensitive to the taste of heavy metals in water and I drink our tap water so I'm not sure that is a source.