What parameter change does kill the snail?

[lastduke]

I stil lhave a problem to keep the snails, the death rate is slowing down, but I still lost snails.
Which water parameter will affect them ?
these days, I got a nitrate spike because one of clown killed himself in the HOB feed in pipe, and I found the body about three days later. two snails died because of this spike, I guess.

is there any other parameter, esp, ca or alk will kill them?

 

[Tennyson]

Calcium and alkalinity won't kill a snail. How big is your tank, and how are you and how often are you cleaning your tank. If you have problems with nitrate spikes, get a cleanup crew like shrimp, serpent stars are excellent for dead fish. I personally don't know what they are sensitive to, I can do whatever I want to my snails, and they don't get affected, especially when I change salinity really fast. And my nitrates are a maximum of 20 (but lowering) in my 46g and they aren't affected.

Sorry to hear that basically everythings dying, hope everything goes well. Have you ever though that maybe those snails could be starving? What kind of snails are these?

 

[erayk1]

I actually overdosed my tank with to much calcium water. That was the only thing I found that I changed that could have killed my snails at that time.

 

[greenbean36191]

Large, quick changes is pH and salinity are the big killers. Chronically low salinity is also common. Extremely high or low alk can do them in too.

 

[lastduke]

hmm......the NO3 are not higher than 20PPM, the tank is 30G. All others are fine, the fish died because he explored a open end tube and stucked inside......
I used the auto topoff system, there is no big sanitlity change.