Algae problems, Cyano or Diatoms?

[Humpty]

Ya it's an api test kit. So is it pretty much useless then?
What brand would you recommend?

Good to know about spreading cyano, I'll reposition the outputs tomorrow.

I can't seem to get much of it out with the syphon, it's so thin right now it sticks to the rocks. I'm sure if it gets worse it'll be easier to siphon out. The only place I can clean it easy is the glass which I can't really siphon after. That's also the place that the snails do the most work.