I'm trying to take control of the pool this season and went out to measure where the chemistries are after a long, warm winter. I could use some help with current chemistries and how to move towards opening.
As of today:
Temp 54.5 F
Water looks clear and clean. So not too bad. I drained out 12" at closing and I recently drained another 12" of snow and rain water accumulation. The tests above reflect values after the second draining. Based on end of season measurements, it's clear that there has been some dilution.
Near the end of last season I measured:
CH: 200 ppm
CYA: >100 (~120 if one extrapolates the scale)
NaCl: 600 ppm
Borate: 15 ppm
Seems some things were diluted by nearly 2-fold (e.g., CH, TA; borate and NaCl are rougher measurements, but they are also down). The guy who closed put some floating triclor things in. Does that account for why CYA hasn't dropped as much?
My questions are these:
1. Is there anything in my current values that I should address immediately?
2. If I want to bring CYA into TFP guidelines, I need to drain the pool down, yes? Is there any danger of draining it too much before refilling?
3. When I dilute the CYA, do I assume that CH and TA will go down as well?
4. Is there a necessary order to replenishing the various factors? What comes first? Borate, Ca, Cl2, bicarb? BTW, I plan to add boric acid from Duda (just ordered 110 lbs).
Thanks for any help.