worked on the liner wrinkles all day and i've decided they will get no better. i am filling it and had a few questions. i am using rocks from the beach(gravel for the bottom) and noticed a few clam, oyster and snail shells. i am cleaning the rocks but also wonder if i miss anything on the rocks this too can be harmful to my fish. i want my hot tub back and would like to have them in the water in a few days. i am concerned about the water temp difference as the hot tub is in the sun and 1/2 of my pond is in the shade.how many degrees is safe to move them? i may just be freaking out but i never figured how i will be able to clean this thing out once a year. it is around 9k gallons( i believe)this pond is much bigger than i ever figured and may be totally out of control. at this point i don't think my biofall or pump is big enough.