So, I know this topic is over a week old, but I promised I would update what happened with the weird algae. Basically, I was away for 4 days and when I came home, I found that the funny looking algae had completely vanished. What was even weirder and more worrying was the fact that there were now "Actual Hydra" all over the tank glass and plants. What worries me the most is that while I was away my mamma shrimp had a batch of babies and I'm afraid the hydra will prey on them. I know they are hard to spot, but I only see 2-3 at a time. Any suggestions as to what treatment I can put in the tank to kill the hydra but not harm the shrimp? Homemade? On the market? Type of fish or snail? I don't want to remove them manually, because I'm afraid that I will squish or stress out the hard-to-see newborn babies.
Thanks, any info will be tons of help.