Aquaroche rocks and algae - any experiences?

[jourdy]

Does anyone know why Aquaroche rocks seem to promote algae growth? This is the only time I've ever had algae like this for as long as I can remember. My other rocks are coralline-filled and no speck of this algae.

The aquaroche ceramic rocks I have are around 2 months old - inserted in an already mature tank when I took out my last aquascape and replaced it with this.

PO4 reading is usually 0.00 to 0.02

Any ideas?

 

[saltyphish]

Unless the rock is leeching something off and the algae is consuming it before it hits the water column making you read 0 on tests. Other than that I am unfamiliar with that type of rock but it makes sense because all of your other rock is algae free.

 

[reefwiser]

What happens is that the new pieces are free of growth and the algae has a easy place to grow.