Is this sponge dying (pic)?

[Mikro]

It has all those white tips...

 

[SDguy]

Yes, the white tips are dead tissue. I would cut these off with a clean, sharp blade, scissors, whatever. Just do not take it out of the water to do so. Always keep it completely submerged.

Good luck with it.

 

[Mikro]

Do you think its a light problem, too much or not enough?

 

[SDguy]

Most sponges don't require light. And the light is only detrimental if it causes nuisance algae to grow on the sponge.

 

[HowardW]

Are you feeding it..... aren't sponges heavy filter feeders?

 

[Mikro]

Yes I feed it Phyto Feast

 

[HowardW]

<a href=showthread.php?s=&postid=8008126#post8008126 target=_blank>Originally posted</a> by Mikro
Yes I feed it Phyto Feast

Ok.....I think that type of sponge also prefers very good flow and low light.