So I've had my gray tree frog's naturalistic terrarium up and running for 2 or 3 weeks now, but have noticed some brown algae forming that I'm not very happy about. There is a little drip next to the main waterfall, and we have some java moss growing quite well in it, as it's almost doubled in size from when we started. But I noticed that the java moss is getting covered in slimy brown algae, and I'm worried it's going to take over. I found reference to brown algae on some aquarium websites, but it was all a bit over my head, so I thought I would see if anyone here has had any issues with this.