I have one of these[1] Spectruino spectrometers laying around, and I've occasionally used it for fun projects over the years, most recently in a "jar of pond wa

I have one of these[1] Spectruino spectrometers laying around, and I've occasionally used it for fun projects over the years, most recently in a "jar of pond water" experiment, wherein I attempt to keep a glass of pond water alive so that it grows its own ecosystem[2]. I had some success with this pond water experiment, such that I was able to observe multiple Hydra generations feasting[3] on the fruits of my labors. I mostly used the Spectruino for 'marvel' factor, as in .. was able to see the spectral signature of the jar experiment change over time. I regret that I don't have my daily spectral log images available at the moment, but its something I always wanted to get back to .. one of these days .. [1] - https://www.myspectral.com/project/spectruino-three/ https://www.myspectral.com/project/spectruino-three/ [2] - https://imgur.com/user/waterplusalgaeequalshydra https://imgur.com/user/waterplusalgaeequalshydra [3] - https://imgur.com/gallery/e5WLDqc https://imgur.com/gallery/e5WLDqc