It arrives next Thursday. Did you get yours yet?I was using the Tropic Marin Bio Actif Salt and really liked it, no issues at all. I only recently switched on my last bucket to Aquaforest Probiotic since it seemed like on the forum there were concerns with TM again for salt, so I didn't want to get a new bucket.
I tried cipro in the display tank. I had one torch die, it was growing well and had 4 heads. It might have died due to a change in flow with the frag racks blocking things, this was back in dec or jan, but it had "brown jelly" as it died and made me too worried about the rest of the tank. I did cipro and had no issues and no other losses in the tank. The other torch is doing great, as is all of the hammers and octospawn.
On that note, how did your last octospawn that you got look?