No Purple Algae

[MrMoses]

I don't want this stupid purple algae in my tank. I have some spots of cool bright red algae and some bright orange. How do I encourage these less common colors?

 

[Hop]

I don't think you can. Coraline just happens. Given time various morphs may occur. Over the years I have the regular coraline, green and then thick encrusting reds and purples.

 

[PRDubois]

Time and Light - What type of light do you have.

Also, the type of rock. Different types of rock can produce different colors. Fiji is normally Purple.

 

[tarpon12]

and lots of calcium

 

[Hop]

Did you guys read the question? He doesn't want coraline other than the colors he has:lol: Calcium and light will help with growing coraline not prevent it

 

[PRDubois]

Fiji live rock is predominantly covered with a purple coraline growth once matured, Tonga , and Carribbean live rock is more rainbow colored, and Marshall Island live rock, has more red , orange, and yellow coraline algae growth than the others.

From: http://www.aquacon.com/liverock2.html

 

[Hop]

And after 8 years my reds are gone and I have a lot of purple

 

[lovethemfish]

Well i have an awesome purple sea urchin that keeps my coraline from getting to thick because that is all it eats. If you dont want coraline get a coraline eating urchin.