New AGP owner (installed end of March 2014). I've been on the TFP Method since day one and love it. This past week the kids have been gone a lot and the pool has not been getting used much if any. I have the Confer Entry Steps. Over the weekend I noticed some algae on the down stream side of the steps and on the bottom of the pool on the same side of the ladder. I wasn't much, but it was enough to be noticed. My water temp has been mostly around 88-90, but drops to mid-80's with rain. I have a 2 speed pump and have been running it on low for 10 hours per day (5 in the morning and 5 at night). I get at least 10 hours of sun per day and no trees. I brushed the algae, but ever since I've been brushing daily in small areas, but I notice a cloud of dust or algae at the end of each sweep.
This past Sunday my levels were as follows:
FC- 3 (targeting 5 and usually loosing 3 ppm per day with full sun)
pH- 7.8 (added acid and brought back down to 7.5)
CYA- 40 (maybe more like 37 or 38)
My overnight chlorine loss was 0 a few weeks ago when I checked before the sun came up. Sunday the overnight FC loss was at most 1 ppm, but I didn't get to it until about 9 AM. Since this started I turned the pump on high for 8.5 hours per day, but I'm still having the problem (and the kids haven't gotten in until tonight).
First, is this normal. IF not, what to do? Second, we are about to go out of town for 10 days and my father-in-law will be adding chlorine, but I doubt he will brush or swim. What to do?