TFP pool calculator recommends CH between 250-350 with plaster pool, but between 100-150 with a spa - is that 100-150 the number I should shoot for since I have a pool with an ATTACHED spa that spills over into the pool? Pool is about 30,000 gallons. Spa is used less frequently in the hot summers - so another question/option - maintain higher CH during the summer, then lower CH during the winter for SPA?
Thanks,
Steve
Thanks,
Steve