I noticed today that the pool has some dirt looking spots across the bottom and on one side where the wall meets the floor there appears to be some green color. Im leaving for vacation at the crack of dawn for 8 days and no one will be around to look after the pool. Any recommendations? Should i raise the FC to shock level and keep the filter on while I'm away (my CYA is 40)? Im hoping to not come back to a swamp any help is appreciated.