- 28 Oct 2021
I had a random thought earlier, whilst pulling the duckweed from my jar-arium on the windowsill; I keep a colony of daphnia in there, along with a few shrimp and have from day 1. It's on a south facing windowsill, so gets a lot of sunlight, yet very little algae. There's a bit of hair/thread algae and occasionally (every month or so) I wipe the glass, but that's it. It gets a squirt of ferts when I remember and is topped up with either aquarium water or rainwater, whatever is to hand. I wondered if the daphnia are helping to control the algae by filtering out the spores? If so, could we use this to our advantage while a tank establishes? It may have been discussed before, but I couldn't find anything...