I got a moss ball one for each of my boys a little while ago, and just now I noticed Darthbetta's moss ball looked rather.. weird. I just cleaned their tanks not even a week ago so why is his moss ball so... mossy? and what should I do?

Hello everyone so I had recently took a trip to my local petco and now I am officially disgusted the conditions that they keep there fish in is so frustrating I was already frustrated with the minimal amount of water they keep there fish in but after my latest trip I have now realized that the...