He needs to look at another cause other than pH. I have 8.2 during the summer and my Amazon type fish have been doing more than fine for almost a year now and they aren't "easy keepers". I've rummy nose and neons.Lorazoo said:Most LFS's arent on well water. I have a friend who has well water with similar pH. he has had a hard time keeping fish alive, mainly the Neon tetras. The things taht have done well were the platys which tend to like higher alkaline water. i would say a fish that likes very soft water like neons wouldnt do so well, but fish that are more tolerant of harder water would do fine.
As liv2pdl already stated: the pH is fine and messing with it will only cause more problems. I'd also caution you against buying a "filter" to "fix" the problem. Instant fixes seldom are and in the aquaria hobby are often snail oil with good marketing hype.
The only way to actually fix this is to mix your water with RO or DI water.
Roan