How to keep out red slime

[fatcats]

I got rid of red slime but it came back how do I keep it away
THanks

 

[copernicus45]

Increase the flow throughout your tank, what are your water paraments? Nitrates, Nitrites, Ammon, Phos.

 

[fbm]

Use RO/DI water as well.

 

[xdave]

Phosphates are usually the culprit.