Knitting mesh, yes. Was hoping to grow some soft algae and hang a piece for my farlowella vittata pair. Added some small twigs as well after that photo.Is that knitting mesh? What did you use to start the growth and feed it? Aquarium water or something more specialized? You have me curious about what you grew too. If it doesn't look slimey or smell bad it's probably not cyano. Cyano loves phosphates and nitrogen so I guess if you juiced it with just exactly the wrong ferts maybe you could have grown some. If you just used tank water you likely would have grown whatever is common in your tank.
You could put it under a microscope and identify it to a very high degree of confidence to see what type of alae you grew. I found some slide pictures from a research paper and used a cheap 300x microscope last time I didn't know what I had. I still haven't found any cyano personally though. There's a water drop test you can do to prove it's not cyano if your worried. In shallow water Cyano spreads more like jello covered in food coloring. Other water suspended algaes typically dissolve/drift more naturally. I again I haven't had a confirmed cyano so I haven't seen the jello behavior at home but in research it seems a common identifier. Also, fish won't usually eat cyano so you could just let them tell you
Cool science project you grew though, which algae specialist are you trying to feed?
Ive seen recommendations to leave a rock or such in a jar in a sunny window and rotate out the algae covered rocks as a supplement for otos and such. I went a step up and put it under a light, like right right under the light. The water is super warm from it too.Those are pretty cool, I've never kept anything like them. I honestly haven't ever done an algae growth experiment without starting with a sample. I remember back in highschool doing it with an algae scraping collected from a rock in the river. We left a chunks of it on coffee filters sunk into a jar and used various light sources to see what worked the best. Maybe algae without a "start" so to speak starts out free floating and will eventually collect and form the way you would like it to. I really don't know lol. The only way I would guess you could identify exactly what it is would be with a microscope.
Have you found a write up on harvesting your own algae or done something similar before? I do love to learn.
So about 10 days? Not a bad yield at all. Do you run the light 24/7 under the bowl? How hot do you think it gets in there? I have some GE par38 bulbs that might do very well at that but I imagine they would get pretty hot, they have their own heat sinks. We use them in cheap clamp lamp fixtures to start outdoor plants that need a longer summer than we get in the spring.
Very cool project you have going indeed.