- Reaction score
- 5 to 10 years
I just got some Pygmy Cories. I noticed they dart to the surface a lot, a lot more often than my Otos do. Could this mean I do not have enough oxygen in my water, or do Cories just do it more often? Also they are fairly inactive and sitting at the bottom right now...I'm assuming that's normal as most cats are somewhat nocturnal (it's about 4 pm). One more question, how long is it ok to leave algae wafers in the tank if they haven't eaten it yet?