Yellow Ball Sponge care

[CCDillon]

Hey everyone, I got gifted a softball sized yellow ball sponge about a week ago and am looking for anyone that has tips on care. 

 

I keep it in my fish-less 10 gallon macro-algae setup currently. I am broadcast feeding preserved phytoplankton daily. Sponge seems happy, didn't let it touch air and it seems to be extending the bottom of itself to better secure it's place in the tank. Holes in the sponge frequently open up more, especially after feeding. I also have it in a medium flow spot that is under a ledge of live rock. 

 

Am I generally doing everything correctly? I'd hate to mess up with this unique creature. Do I need to do frequent water changes when dosing? This is a simple setup that I rely on water changes and macro for filtration. 

 

Here's some pics:

 

[A Little Blue]

Looks happy. Flow is mostly irrelevant from my experience. Low light is a general direction as far as sponges are concern. Phyto is fine. Sponges in general do best in established aquariums. 

[CCDillon]

38 minutes ago, A Little Blue said:

Looks happy. Flow is mostly irrelevant from my experience. Low light is a general direction as far as sponges are concern. Phyto is fine. Sponges in general do best in established aquariums. 

Thanks for the input! Yeah this tank is fairly established. Started with rock and sand from my mixed reef about 4-5 months ago.