Is my Marimo Moss Ball Dying?

[Laser]

I have 2 Marimo moss balls in the same planted tank that I've been slowly working on. 1 is a deep, luscious green and the other appears to be dying. When I squeeze the healthy one it is very firm and when I squeeze the other one it's very mushy. I dose Flourish comprehensive weekly and Excel daily. Is there anything I can do? Any particular nutrient I should dose?

Edit: Forgot to mention I'm using two 15 watt spiral CFL's 6700k. and the tank is 10 gallons.

 

[Bottomfeeder88]

I've heard excel can cause a die off but it hasn't happened to mine.

 

[aqua_chem]

Did you get both moss balls at the same time? It's peculiar that one would be dying and the other surviving, especially if they're right next to each other.

 

[Laser]

I bought the dying one a week after I bought the healthy one from the same petsmart. However, they both started out in the same good condition.

 

[Robbieg]

I'm having a similar issue with my moss ball anyone have any advice

 

[blert]

Have you squeezed the ball out of the water? They don't like that at all.

Has it taken a large shot of Excel? They don't like that either.

 

[Laser]

I may put that moss ball in a non-excel tank. So, should I squeeze the ball under the water?

 

[blert]

...So, should I squeeze the ball under the water?

Yes. Either give it a gentle squeeze in the tank before you do a PWC or quickly transfer it to a PWC bucket. They don't like it when air gets inside of them.

 

[MC1973]

Agreed with all, I would say excel is the culprit though and for some reason your other ball seems to be taking most of that hit.

I would also recommend rotating the ball every few weeks to prevent the underside from dying.