Hi I checked out my pond and it's all normal with the test liquid kit. My pond is 125gal plus 50gal and I have a Lilly, parrot feathers, hogwort, and iris in my pond. Also three turtles and about 5 2" comets. I checked my fish and two have ick Ive read to treat the pond but I know salt is bad for turtles what can I do?