Hi there. In reference to your algae problem...don't worry, very common. I have a website: www.catfishdogs.com and hear about this problem every day. The one product I would recommend is Algone. It is an organic problem and no doubt will help with...
I also agree with bathing only when needed. As far as flea and ticks, I sell a product that the dog or cat can wear on their collar and emits a scent that keeps flea and ticks away. I actually sold hundreds to Iraq and the soldiers wear them to keep ...