You don't have enough information for us to help you.
The BBB method is based, not on our doing it for you, but on you being willing to let us teach you how to do it yourself: testing, treatment, and maintenance. We can help YOU take care of your pool more cheaply and easily than what you've experienced before, but you have to learn stuff, and then use it.
Start like this:
1. Go to Walmart, and get 10 gallons of PLAIN 8% household store brand bleach & 2 boxes of 20 Mule Team borax for each 10,000 gallons of pool water in your pool.
2. Also, get a gallon of *DISTILLED* water and a cheapo OTO / phenol red drops kit. If they have the HTH 6-way drops test kit, get that instead.
3. Test your chlorine and pH, and then add 2 gallons of bleach per 10k gallons of water. Report the test results here.
4. Go to Lowes or Home Depot or a hardware store, and get 1 gallon of plain 31% muriatic acid. If you don't have any, get some blue/purple nitrile gloves, and then read http://pool9.net/muriatic/ to learn how to use muriatic safely.
5. If the pH is less than 7, add 1/2 box of the borax per 10k gallons, slowly, to the skimmer with the pump running. If the pH is more than 8, add roughly 1/4 gallon of muriatic acid, per 10k gallons . . . but ONLY after you've read the muriatic acid page!
6. Retest that evening. If the chlorine level is clear to medium yellow, repeat the dose. If it's dark yellow, cut the dose in half. If it's orange, skip the dose.
7. Go to the testkit page: http://pool9.net/tk/ and read about kits. If at all possible, order a K2006 kit. With scale problems, you WILL need it. Watch the videos BEFORE using the kit. If you got the HTH kit, watch the alkalinity and stabilizer videos. (Taylor makes the HTH 6-way)
8. Once you've tested and done your first bleach dose, fill out the info forms: http://pool9.net/pf-equip-form/ http://pool9.net/pf-hist-form/
. . . and then we'll go from there.
BUT, if you're not willing to learn, and simply want a 1-stop 'dump it in and you're all good' solution . . . we can't help you. Managing swimming pools with well water fill is tricky. There are plenty of pool stores, local and online, who will more than happily sell you a simple easy solution, with only 2 drawbacks:
a. They will cost a bunch of money, and
b. They won't work.
Best wishes,
Bookmarks