Brown slim in my fresh water tub ATO

[asylumdown]

The red algae in your tank sounds like cyano. Tanks of all stripes get cyano outbreaks all the time, and the reasons for it are very rarely single issue or can be traced to one causative source. Cyano is a bacteria, and is the most successful group of organsims on the planet, so there's more going on with it than your garden variety algae.

However, the brown slime in your water container is still a problem, and the recommendation for an aquarium safe pump is a good one.