Blue sponge turned white in a day

[Recife]

I added a blue sponge to my tank yesterday under MH and in a good flow area. It wasn't exposed to air at any stage.

This morning it was white or very light blue/grey.

Is it dead? If not, it's obviously a sign it's not healthy, so what can I do to save it?

 

[rchan11]

Part of my red tree sponge is turning white also, that means part of it is dying. I know they've low lighting needs and high flow. I'd keep it away from MH. Someone suggested that using a turkey baster to blow sediment off the sponge. I feed mine phytoplankton daily. Part of it is dying, like mine but rest is doing ok. I've had it for couple of weeks.

 

[Recife]

Blue sponges (Halichondria) are different from tree sponges. They rely heavily on photosynthesis and nice strong light, like an sps.

Starvation is a common cause of sponge death. However, I just added it yesterday, so it wouldn't have starved that quickly.

Also, they are not white spots really. It's like the whole sponge lost it's pigmentation. If this is a sign of death, there's no cutting of bad parts that would save it now I'd imagine.