cyano bacteria blow off what you can and throw it in your bin it will be fine if thats what your planning. basically theres dieoff in your tank and excess nutrients and that stuff loves it, lots of flow and water changes can help but it works best if manually removed.it will come and go throughout your systems life but shows when there are problems like something dies, excess of nutrients,too much light or poor water quality.if left be it can get worse but if you tackle it now it will go away with a little love.you can use things like red slime remover but im not a fan of liquid fixes best thing is to find out what the causes are and based on your parameters you have a few problems.
nitrates need to be as close to zero as you can get them they dont have to be zero but the lower the better
phosphate has to be zero.... if theres any at all youll get algae blooms and then other problematic algaes.
salinity does best at around 1.025
would raise your alk just a tad but thats not your problem so forget that for now.
when a tank has its water parameters all over the place its then " unstable"untill its stable youll see alot of problems like this and they can and will get worse. first you need to solve these problems and then youll see a difference using ro water , lots of flow, and manual removal.
cheers and theres lots of great threads on here regarding cyano and brown algae
