Neons dying, and a cory cat too... because of high pH?

tetra can be hard.. but have kept many for long periods in 8.5 pH... that said I choose different fish types as they are a pain...
 
its AAALLLLIIIIIIVVVEE! Igor, I have done it! I have created life from a dead thread!
 
i have corys and neons and my p h is 8.4 and the water is very soft its well water and my fish are doing very well i don't do anything to change my water its probably something else you are doing or not doing
 
doesnt high ph contradict soft water.

ive had some troble with a cardinals and blue tetras in my tanks at my apartment and my ph runs around 8.0. they seem to do ok and eat and everything and i come home and find one dead. ended up losing all over a month.
 
Nope. A solution of sodium hydroxide in distilled water is as soft as it's possible to be but highly alkaline.

Sometimes I hate our language...

The pH would be very high (alkaline) however it would have no alkalinity. This solution would have no buffering and would be very unstable. As it absorbed CO2 from the air the pH would steadly drop until it was neutral again.
 
I know. I hate the way "alkalinity" is used in water chemistry. But bench sodium hydroxide solution is pretty stable; it tends towards a pH of 14; I don't think even saturated with carbonic acid it would reach neutral.
 
I purchased 6 neons after my tank cycled, and I had one die each day for five daysm until there was only one left. That one fish then survived another week, but I felt bad for him since he was all alone, and he still looked a little sickly, so I brought him to my LFS and they accepted him into the "Hospital" tank. I dont think I will try Neons again, since I have read, and have heard to my LFS, that about only 1 in 10 Neons survive. My water chemisty was and is fine, and they were slowly acclimated to the tank as they should be, so I dont think it was anything I did wrong. It's too bad, since these fish look really nice in a school.
 
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