1. It's very common for pools in spring to have 0 ppm CYA; contrary to what most in the pool industry believe, bacteria can eat it.
2. DE filters should not leak DE into the pool;
3. Depends on all sorts of things to which I don't yet know the answer.


4. Take a COMPLETE set of K2006 readings, except CYA (don't waste it -- you haven't suddenly developed a CYA level) and report them

5. Go to Sams Club and buy a 50# container of PoolBrand dichlor. Do NOT get dichlor elsewhere; all the companies are blending and diluting dichlor and some of the additives cause problems. If you can't get it there, order this: Kem-Tek Dichlor 22.5# @ Amazon Dichlor adds chlorine AND stabilizer.

6. Report your make/model of pump and filter. If they're old, get what you can, but send pictures to poolforum@gmail.com. Don't size them down; I can do that. Try for large hi-res pics.

7. Report general details on your pool, including piping. I'm guessing this is some sort of really old concrete pool, possibly with metal pipes? Is there ONLY a main drain? If so, consider it a SERIOUS threat to the life of your children; do NOT let them near it! Single drain pools rip the guts out of people . . . literally, as in your kid's intestines could end up in your pump strainer. I'm not kidding about this!