Red algae

[mountaindew]

I had a problem with the red algae about 6 months ago and since then I have had no problems with it coming back.Now its starting to come back.What would cause this to do this.

 

[ishar]

well let us know your setup. Lighting? Fertilization? Plants? Inhabitants? CO2?

Usually this algae is caused by fluctuating or low CO2 levels in planted tanks, and that's all I really know. Let us know more about your tank as it will help out a tonne .

EDIT: My bad- I didn't realize this was in the saltwater section. Just ignore me .

 

[TRe]

are we talking about cyano or diatoms? either way its usually caused by high nutrients (nitrates,phosphates) and lack of flow .... test your params n get them in check through water changes and increase the flow to the problem areas
btw its usually phosphates which alot of people dont test for

 

[Lorna]

if you have high nutrients such as nitrate and phosphates your test results may show these are okay as the cyano is actually using it......I would increase the flow, cut down on feedings and do water changes and remove as much as you can during the water changes......you need to find out the reason and correct it otherwise it will just come back

 

[mountaindew]

Thanks,I will do another water change and see what happens

 

[TRe]

when u do a water change u could also try and siphon as much as u can out... i find that maes a huge differance...but like lorna said cut back on feeding, increase flow, and another thing u could try is extended lights out (leave the lights off for a few day)