my 1st post, discovered you in Costco Mag.
Have 36k, IG, Gunnite, Sand-Pentair Triton TR-60 60 gal/min 300 lbs sand (new sand), 1.5hp single speed 3450 rpm pump, pool built aprox 1970, dolphin robot cleaner.
Outdoor pool, surronded by trees. Atlanta, GA. 30327 pool temp now 81 have heater for pool but rarely use.
Algae prob. on sides and bottom, sweeping all the time. If i leave for a week, the pool turns GREEN.
FC - .5 have two floaters with 6 3" 94% tabs each. also put 2 3" tabs in each skimmer (2) Can't keep FC up, add shock but wont stay up
CC - .5 Leslies test indicates TAC total available chlorine
PH - 7.6 Added soda ash 2 days ago
TA - 200
CH - 310
CYA - 100 Have not changed water in 10 yrs. (drought) this yr. lots of rain, should drop?
Borates - do not use.
Nitrates - 20 ppm (Leslies says way too high...see rec of fresh n clear, aprox $850.00!!!???)
Phosphates - 300 ppm
Metals - copper / iron - 0 / 0
TDS (total disolved solids) 750
Leslies Pool Supply rec.
1/2 gal. Muratic acid
220 lbs "fresh n clear"
62 oz Algae control
Been fighting this pool for 2 years now. Ready to fill with dirt and start a garden...
20 oz. Phos Free to reduce Phosphates