Algae growing on LECA - Do I need treat?

[LuizaG]

Hi everyone

It has been a long time since I've been around so it's good to be back.

Happy to report that my dying phal that was repoted November last year in Leca is in active growth. It had shyly grown until about a month or so ago and then it suddenly started growing 6 new roots, then a new leaf, then another 3 roots. Excellent! Excellent! It has been through a lot and it was very resilient. A phal truly set on living.

But we moved accommodation 3 months ago and the phal has been sitting on a North facing window and it has developed a lot of green stuff inside the pot all over the leca on the side of the pot directly facing North. The side of the pot facing South had none (that's why I did not notice until later but it is slowly taken over.

I assume it is algae since it is growing in a damp medium. The Phal is doing fine so far but is there something to worry? Do I need to treat somehow or should I leave it alone? I never experienced that and I don't know if it's normal or not.

Thanks
Luiza