Hi! In my humble opinion, I think there are two many variables being thrown at you. It is enough to send anyone in a tail spin! Keep in mind, when it comes to pools - most fixes are not immediate. Whether it is because of algie, or some other issue, it may take days or even weeks to resolve. Here is my advice:
1. You have a good test kit...so that is step one. However, I only see one test over the past week or so that was somewhat comprehensive. Everything else is only focused on FC (for the most part). Granted FC is important, but not the only variable. keep in mind, a fix on one may increase/decrease other things like PH and ALK - which can all result in cloudy pools.
2. Take a complete daily test reading and report: FC, CC, PH, ALK, CH and CYA. Salt - you can probably get away with testing once a week or even less frequently unless you are having a ton of rain and overflow - no reason for salt to be dropping much at this point.
3. I would continue to take daily readings of ALL items for at least a month so that you can familiarize yourself with "normal" readings. Each persons pool is slightly different. My pool may tend to read a little high on PH versus someone (even my next door neighbors) pool. Therefore, it is important to get the gauge of your pool.
4. After the full reading is taken. Start by reviewing FC / CC. If your FC is around 9 for SWG, but you have a CC of 1 (or more) - you have algie that is eating the chlorine. Ideally, you should not have more than .5 CC. If your CC is 1 or greater, you need to follow the SLAM process. Also - FC at this time of year will deplete really fast. For example - I live in Texas. Pretty consistent 100 degree days. I have an SWG. My FC will typically drop about 3 per day. Oh - actually that is something to check. Make sure that your SWG is rated for approximately 2X the size of your pool. For example - 7500 pool, you want an SWG that can handle about twice that volume.
5. Once your FC and CC are in line with recommended levels. I would then focus on PH. While you can rely on PoolMath as a general guide, I would also look at the Taylor test kit on how much acid to add if needed. Until you have a feel for your pool - I would recommend adding about half the amount of acid that is being recommended. Come back in an hour - retest - and then add the remaining half if needed.
6. After your FC/CC/PH are in line. Now it is time to focus on Alk. Decrease or increase as needed.
7. Finally - your CYA. This is fairly easy to change. Just get stabilizer in the pool section of walmart. It is much easier to add CYA than to take out - so using the acid example - I always add 1/2 the recommended amount and then add more as needed.
If you follow these steps - I think you will see by the time you hit step 4 or 5 - your pool should be pretty clear. I have only been taking care of my pool for this season, but I can honestly say it is FAR better than the pool service did. Also - don't go to the pool store for advice from the "experts" -typically they will tell you your phosphates are high and try to sell you a bunch of BS chemicals!