Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
I've used Kalk in the past for them with a needle like @diana a mentioned. I'd mix a small amount until it looks like tooth paste, and just shoved it into them and blasted away
So my urchin decided to redecorate my tank...by plowing stuff over. In the piC above, you can see where my rusty gorgonian was
Here is my updated tank shot, I now have a huge gap on top
I also placed some mangroves in my display, they are starting to root out