Lance's 225 gal tank

[Lance]

Originally Posted by fishytime

what flavor of sponge did you use Lance....I think the phos "sponges" are one of those products that contain aluminum and can actually irritate a lot of coral....might be the reason for your sps not being too happy....just food for thought..

Kent Marine Nitrate Sponge. It doesn't say on the container if it contains aluminum. Melev recommended it so I figured it's probably safe.