If you can see this ..I have about eleven of these on my glass now, and they look like starfish, but I count more than 5 segments. Most are six segments. I had a starfish 6-8 mths back that didn't make it. He was a sand-sifting star, so I am puzzled about the glass climbing guys here.
Another thing is the Nitrate ONLY level problem I am having. I have a 30 gal FOWLR with a HOB penguin filter, and I guess I am going to get a protein skimmer.
What is the maintainance like for these, and how effective are they for this Nitrate problem?

Another thing is the Nitrate ONLY level problem I am having. I have a 30 gal FOWLR with a HOB penguin filter, and I guess I am going to get a protein skimmer.
What is the maintainance like for these, and how effective are they for this Nitrate problem?
