algae in one spot

[Qasimja]

so my tank is going on 4 months and i have little spots of algae here and there but it mainly seems to grow off this sump return line for some reason and the other one is spotless is it because that one sits directly under the led light?

 

[pdxmonkeyboy]

Its the flow..

 

[Qasimja]

Its the flow..

yea but wouldn't both lines have the same flow going out just about so why does that one grow it but the other not?

 

[Qasimja]

also is that just typical hair algae? might be kinda hard to tell from the picture

 

[pdxmonkeyboy]

You have to break it down. What does alage need to grow? Nutrients. Check. Typicaly starts in lower flows.. check. Needs light.. check.

So yeah, the light is causing it to grow faster there.

 

[Bret Brinkmann]

I find gha is more light dependent than flow dependent. But it's growing on the outside of the tube not the inside. So the flow coming out of the tubes doesn't matter.

 

[Saltycrew]

Flow and lighting