Coralline algae and LED lighting

[MLK]

I've had a tank up for over two years with barely any coralline growing anywhere. Only use led lighting from an old AI fixture, is led lighting not the best for coralline growth?

 

[kharmaguru]

Type of lighting shouldn't matter. Lots of people have leds and lots of coraline. Coraline has the same requirements as most corals - stable alkalinity, calcium and magnesium as well as some available nitrate and phosphate. I find coraline usually does better in areas of high flow and lower lighting. Keeping magnesium on the higher end (1500ppm) also seems helpful.

 

[MLK]

Thanks, I just started dosing kalk, it's weird everything is growing even the sps, but no coralline at all...

 

[kharmaguru]

Thanks, I just started dosing kalk, it's weird everything is growing even the sps, but no coralline at all...

You can seed it to your tank to help. Choose a couple snails covered in coraline from your LFS.

 

[Anemone]

Yeah, I have LED lighting (Kessil AP700), and my coralline grows lower in the tank and areas of shade (such as the shade shadows cast by my two MD-40 wavemakers).

Kevin