I had to dig some more, to get the info I needed. Do these things:

1. Go to the Walmart in Woodstock, and get the HTH 6-way drops kit -- it shows to be currently in stock.

2. Go to the Sams Club in Crystal Lake and get their PoolBrand Chlorinating Granules - 50 lbs. for ~$115
If you aren't a member, call and see if you can get a guest pass.

3. Go to Amazon, and order a K2006 test kit (yes, you will need that, too)
Taylor K2006A (3/4 oz bottles) @ Amazon
Taylor K2006C (2 oz bottles) @ Amazon
4. Go to the Lake in the Hills Lowes, and get their "Crown" muriatic acid -- 6 gallons to start. While you're there, get some nitrile gloves (blue) and inexpensive safety glasses, if you don't have any. Do NOT get any of the 'safer' muriatic acid; DO read the muriatic acid sticky in my signature BEFORE using the muriatic.

5. As soon as you can conveniently do so, order 50 or 100 lbs of calcium hypochlorite from Amazon. Chlorinating with this will help remove iron, but you'll have to use the dichlor first, to get your stabilizer up.

6. See if you can get a small amount of DE powder from your pool store, or Lowes or Walmart. Add 2 - 4 cups directly to the skimmer, and then watch to see if the powder shoots back into the pool. If it does, your filter needs repair. If you can, open your filter ANYHOW, and make sure it's full with sand. If not, get enough filter sand from your pool store, or possibly Lowes, to fill it.

7. Make a dated list, as accurately as possible, of ALL the chemicals you've used in the last months, with EXACT product name, quantities and dates. Also include an inventory of what chemicals you have on hand.

8. Post that list AND test results from the HTH kit ASAP.

9. Begin dosing with the dichlor (Sams) ASAP. Start with 1 cup doses added directly to the pool - watch to see if there is any color change in the water. If there is not, gradually add larger and larger doses over an hour's interval, till you've added about 12 cups (~4 ppm of chlorine). If all goes well, you'll should begin adding 6 cups each AM and 8 cups each PM, till your pool begins holding 2 - 4 ppm of chlorine throughout the day.

10. Once you have established a constant chlorine level, BRUSH the pool completely. Then, add a 6 - 12 cup dose of dichlor after brushing.

11. Wait at least 12 hours, and then VACUUM the pool completely. Add at least a 6 cup dose of dichlor when you do.

12. Do NOT let your chlorine level go below 1 ppm at ANY time; it should be over 4 ppm EVERY night, AND first thing in the AM.

13. Meanwhile, begin adding 1 gallon muriatic acid doses till your pH reaches 7.4 or a little lower. Hold it at that level.

14. Tell me the EXACT model and make of your sand filter.

15. Verify your pool chart info: you have no pool heater and no other pool equipment except your feeder.