We've just (mostly) completed a renovation on our pool, and we're 21 days after plastering (20 days after initial fill). We will be closing the pool in about 2 weeks, so ~35 days after plastering. I've been following my PB's startup instructions, which were basically the same as the NPC Startup Card. Also, my pool is SWG, but I have not added salt (since the instructions say no salt for at least 28 days), and the plan suggested by PB is to wait and add in salt when we open in the spring and start the SWG up again at that point.
At this point I'm basically at:
FC=3-5, pH=7.2-7.5, TA=80, CH=225, CYA=70
At this point everything is mostly stable, except FC and pH needing adjustments every few days (with bleach and Muriatic Acid).
My questions are related to what chemical levels I should shoot for at closing, and how soon I should adjust.
A few questions:
1) PB instructions say to maintain those "FC=3, TA=80-120, pH=7.2-7.5, CYA=30-50, CH<=200" for 28 days. I'm inclined to start moving towards the TFP targets (FC=5-6, pH=7.2-7.5, CYA=70-80, CH=350-450, TA=60-80) sooner than that, maybe now? Any reason not to do that? CH is the one that will need the largest adjustment, and it seems better to me to try to slowly move up to the target as opposed to trying to bump the CH up ~200ppm to ~400ppm quickly before we close.
2) I'm curious what I should target for levels at closing. Any particular levels that I should pay particular attention to, or just keep them at the TFP recommended levels? It seems odd to me that the pH is bouncing around so much now and requires frequent adjustment, but when we close the pool we just forget about it until the spring...
3) PB says salt shouldn't be added for 28 days, and since this is very close to when we close, he suggested that we just wait and add salt after we open. Sounds reasonable to me - any reasons to add before we close?
4) We're using our PB to close the pool this year instead of the old company which we were never too impressed with. At closing the old company added Chlorine, algaecide, and scale/iron to the pool. Is there anything I should make sure that they do or do not add when they close this year with the new plaster?
Thanks in advance.....