Spring Water and Tank Parameters

I am on a well so I do not at all feel comfortable using that water so I use bottled gallons of Spring water. I have a square 5 gallon filtered tank that has been up and running for over 3 years with bi-weekly water changes of on average 40%. Over the years have had a few Endlers in there but currently there are only 2 Nerite snails, a bunch of hitchhiker snails, and a live plant, all thriving because the plant grows like crazy and the Nerites are past their life span. As of today, and this stays real steady, ammonia is 0, Nitirites are 0, Nitrates are 5-10, PH is 8-8.2. GH is 12 and KH is 9. I live in Florida so no heaters needed and temp is steady at 76.
I decided to get another nano tank-a 3.5 filtered tank that now has a Sword plant and moss balls. It has been cycling for 2 weeks with Seachem Stability added daily and Ammonia is 0, Nitres are 0, Nitrates are 0-.25, PH is 8.0, GH is 14 and KH is 9. I tested the Spring water and the PH and GH is high so the obvious thing to soften would be to find a different brand of bottled Spring water, but I don't really want to change the parameters of the water with the geriatric Nerite snails.
So-both of these tanks are running on the high PH high hardness as they are. Am I limited to Guppies and other hard water type fish or do I have a change with say a Betta or Amano shrimp and if so how would I best acclimate them? Any suggestions welcome.

 

You'll have to research specific fish's comfort ranges on pH and hardness to know what might be a good fit. Livebearers are generally happiest in harder water, though other tropicals can do well in them. You might consider adding in some driftwood, which will lower pH and hardness somewhat. Mopani is a well-known wood type to use which sinks and never rots.

 

So thankful to have found this site with help from experienced aquarists. I left this hobby/craft a long time ago and just starting up again and so much has changed! Even though I did research on my 30 gal. scape and fish mates, I apparently didn't do enough regarding buffering, water hardness, and what could change a ph drastically. Thanks so much!

 

Have you tested your well water? Well water is actually pretty good for fish in most cases. There's no chlorine or chromamine in it or any other added minerals to worry about. I have a well and keep (and breed) high end bettas, guppies, and plecos with zero issue.

 

I know that Zephyrhills has a pH of about 7.5, which would open up more fish options. I know you don't want to change out the water with your elderly snails but this could be an option in the future. Here is a video about hard water loving fish:

 

Have you tested your well water? Well water is actually pretty good for fish in most cases. There's no chlorine or chromamine in it or any other added minerals to worry about. I have a well and keep (and breed) high end bettas, guppies, and plecos with zero issue.

I did and we have a chlorinator and softener hooked up to it. I may try some of the raw well water in the future but right now it would be a pain.

 

I know that Zephyrhills has a pH of about 7.5, which would open up more fish options. I know you don't want to change out the water with your elderly snails but this could be an option in the future. Here is a video about hard water loving fish:

I also know that Crystal has a PH of 6.8 and a GH of 7-maybe I will do a partial water change?