Skip the spa flex and look for ultra flex. It should be sold in any pool store.
Spa flex is somewhat flexible and will work for our application, but I found ultra flex and it has the same capabilities of spa flex with the addition of it being more flexible.
Anyways.....
Went to the LFS last night for an acan I saw on their new website. Unfortunatly it was sold, but he did have a little war paint scoly that was from a tank rescue. I've been eyeing it in their frag tank for a couple months now. Originally it was not for sale, but I finally convinced him to let me have it. When I first saw it the porr thing was in rough shape. It had receded quite a bit, and did not look healthy at all. Well fast forward a month or so, and when I was eyeing yesterday it was fully healed up and back to growing. Well it's now in my tank and at an absolutely great price, FREE!!
You can see from the pic how big it originally was and how much it receded. Looking quite good and healthy now.
I did pick up a nice rainbow acan, but some d*ckhead knocked the frag plug over so I couldn't get a pic of it yet.