Help what is this nuisance algae?

[zcharlebois]

 

[pugcrush]

forgot the name of it, but googled imaged it - Neomeris annulata. I've never really seen it as invasive. I have one or two that sprout up once in a while but eventually die off. How long have you had it?

 

[Supurderek]

They don't last long in most tanks since they require quite a bit of calcium.

 

[zcharlebois]

My tank has been over run with it about 3 months now. They are everywhere big and small. Help

 

[Va_Reef]

What is your calcium level?

I used to get them in good numbers anywhere past 450ppm of calcium.