Re your comments on the Aq use thread: IMO, adding 1 tsp Aq salt per 5-10 gal is fine.
But I see a lot of people recommending 1-3 tsp per 1 gal, which is WAY more than you use (5-30 times your dosage) and using this amount for up to 14 days. The stress on the kidneys would be incredible. And if the fish is already sick or stressed, well, this is why I generally don't recommend using it.
Is your water hard or soft? If it's soft, then adding a small amount of salt would definitely be beneficial. If it's really soft, then a small amount of magnesium and calcium salts might be worth considering, too.
+1. I'd be happier with Columnaris.... The tank and equipment has been cleaned, and will now sit unoccupied until I'm sure that any pathogens are dead, dead, and even more dead. (Dead pathogens make me happy.)
Well, when I got home from work, he was already gone. I'm not sure if it was Camallanus or not. The Columnaris wasn't responding to the furan meds, and he was becoming bloated despite not eating so I added prazi/metronidazole this morning. As I was looking at him, I thought I saw a few tiny worms but it was tough to tell. When I got home tonight, he was already gone. The other VT that I got the same day is doing fine though.
Gah! I've jinxed myself by asking about internal parasites! Brought home a fish from Walmart that had fin rot but was flaring at everything. He developed Columnaris, despite being in clean, warm water. (Treating it with Furan.) Today, I saw what appears to be Camallanus worms. No no no! Ew ew ew! (Are the called CamallANUS because that's where they protrude from, I wonder?).... It looks like Tractor Supply carries Panacur (Fenbendazole) dewormer. So I'm off to get some now....
The very first article I looked at discussed how the use of commercial probiotics increased survival rate of fry, and introduced beneficial bacteria into the water which helped maintain better water quality (reducing phosphate, nitrate and nitrite concentrations).