Is This Normal Behaviour?

[fishstick]

I have a 180l tank which is one year old. At the weekend I put in 3 small otocinclus to help with the algae. They are extremely active, really too much so as they are racing round the tank, not stopping more than a moment or so to graze then off again. When they stop on the front glass their hearts/lungs are going like mad. I could understand it if my water was poor quality as I know otocinclus are delicate but my stats are perfect except for nitrate of 8 (my tap water is 8). Has anyone else experienced this frantic behaviour?

My tap water is 8! Where did he come from?

 

[Miss Wiggle]

ha ha the code for that smily is 8) so when you type that the smily appears instead unless you've disabled smilies.

 

[Majjie]

I like the idea of 8) tap water!

I think it's just because your otos are new - they'll probably settle down after a while.

 

[vinylman]

I'd double the amount of Otos; they really do like the company of their own kind.