My Green Pool Saga - Help!

[Pamsel]

I have a sand filter with new sand last summer. I've had it running 24/7 almost since I opened the pool mid-April. The only times I've had it off was when I was told to let the stuff settle out for a couple of days about 2 weeks ago. I have been backwashing 3-4 times a day since I started this process from this forum last Tuesday. Before that, I backwashed once a day.

New twist ~ I have to leave today for a funeral in Indiana. Won't be back until tomorrow night. Not a good time to leave the pool unattended. I will leave the filter running and backwash before I leave. What else to do??

Test results this morning:

CL 16
PH 8.0
TA 340
CYA 25

Looks like my CL is a little high now, although in re-reading all the posts this morning, I see that Evan's last suggestion was to keep it at 15, so maybe this is ok. Today is the first day I've had a CYA reading. Water color unchanged, but more cloudy this morning - perhaps because I brushed the pool again late last night?