Originally Posted by Termato
Even with a wild caught fish, would a difference of .3 pH really affect it if you drip acclimate it?
Depends upon species. I know one reads that fish are adaptable to differing water parameters and all you have to do is acclimate them, etc, etc. While I accept this may work for some species, it will not work for many others, and there is ample science to support this view.
Dr. Neale Monks, a trained biologist with considerable experience, wrote in response to a question from a reader in the Spring PFK that the real indicator of a fish being healthy and "OK" in any tank is the lifespan, and this cannot be normal for the species if the water parameters are too far removed from the preferred. Now obviously individual fish can develop physiological issues and die prematurely, so one has to understand that. But in general terms, a short lifespan, meaning shorter than the average expected, is due to stress. And maintaining a fish in water that is vastly different from what nature intended for it will cause stress. If you read my article on stress it mentions that the fish's physiological homeostasis only functions well in the preferred environment. This can be broad for some species, or narrow for others.
Fish obviously adapt over time, because they evolve over time to adjust to a changing environment. But this can take generations and thousands of years, not a couple hours of drip acclimation.
Some species manage better than others. From all that I have read, and from maintaining and successfully spawning Farlowella vittata, I do not believe this fish will last in hard basic water. Which is why i asked the OP for the GH and KH; the former is critical, and the latter will tell us if the pH may lower naturally.