Hi just did a slam ( see previous thread "Slam now or wait"
started 7 days ago , in summary had a CYA 60 and slammed at FC 24. Passed A no CC, B OCLT loss <1ppm and water clear so Tuesday 10nov waited for FC to drift down to target 4. Wednesday 11Nov FC 21.5 OK, Thurdays 12Nov FC 18 OK, Friday...