Best preventative maintenance bacterial product?

[Juka087]

I was wondering if anyone has a favorite bacterial additive to prevent cyano,algae, and bacteria in nano tanks. Something that you would add weekly every water change. Dr tims waste away comes to mind, and also seachem pristine. Any suggestions would be so great. Thanks guys n.n

 

[MixedFruitBasket]

Daily water change would be (and is) my choice means of prevention.