I would definitely focus on raising the FC right away before algae begins. You're quite low right now. You can crank-up the % of the SWG, increase run time, and/or supplement with some regular bleach just to get it kick-started. A CYA of 80 has a target FC of 6. Since you're at a CYA of 90, I would suspect you need to keep your FC at about 7-8 on a daily basis. Never let it drop below 5.
Keep an eye of your pH as it's right at the top of your range (7.6-7.8). A pinch of acid should do the trick.
Your CH should be 350-450. Staying low too long could cause problems with the plaster. If your water is typically hard, frequent replenishment should increase that fairly quickly. If you have soft water, then you may want to raise the CH to 350. Calcium hardness can be raised with calcium chloride or calcium chloride dihydrate. They are available in some areas as Peladow, Dowflake, Tetra Flake, or Tetra 94, often sold as a deicer by hardware stores, and some big box stores, in colder climates. Pool stores will carry either calcium chloride or calcium chloride dihydrate under a variety of names, including Hardness Plus, Balance Pak 300, Calcium Hardness Increaser, etc. Calcium products should be spread across the surface of the deep end of the pool.
