So, as the title states, I'm having a bit of a problem in my tanks right now, or maybe a problem? I've read a lot of conflicting information on the dangers (or lack there of) of having hydra in a tank.
Long story short, maybe a week or so ago I noticed 2 weird little white stringy things attached to an anubias leaf. I got sort of weirded out by them, but after a bit of research I matched them up with Hydra. I haven't found any solid reports of if they will be damaging to my particular inhabitants, but I am aware that they sting and can kill fry as well as read reports that they have injured Otos (I don't have either, but still, makes you think). I tried to rub them off and suck them up with a baster, but I'm betting I just sent them free in the water
(Sorry this isn't such a short story after all) So fast forward to today, there are SO MANY OF THEM. They have pretty much taken over my sponge filter, as well as a few residing on the glass and plants, most notably the one anubias I first noticed them on. I saw my betta attempt to, and maybe eat, one, but perhaps it stung him, as he seemed to have a bit of trouble eating it, and I haven't seen him eat another, and he spends a lot of time looking for organisms to eat. I have now also seen a few in my other tank, though not as many (yet I'm sure).
So, basically should I be concerned and actively trying to eradicate them? Are they posing a threat to my tanks? If they are how can I safely (and hopefully simply) rid my aquariums of them without doing any harm to my wanted inhabitants.
The tanks all together house:
Red Cherry Shrimp