Thanks for the rapid reply.
you're right sorry I forgot to give some information, age does not know her well but I have a 2.5-3 year I have them on for 1 year and when I had taken about 4 cm, now are about 5.5-6 cm.
Sorry for my bad english.

here are the pictures of my five zebra ask for help in identifying the sex Thanks

This test is 100x30x40 cm tank with 30cm of water column with pump 700 L / H

The final will 100x40x50 tank with 35 cm of water column so I thought a total movement of 2500-3000 L / H

Thank you Rob, on the topic I opened my tests here:
http://www.zebrapleco.com/forum/viewtop ... f=4&t=5750

I have already seen the project but I do not think I can do a unidirectional movement

Here's my solution to river rapids tank ... although I have to increase the powerhead:

http://www.youtube.com/watch?v=V-vhy8ZLAyE

What do you think?

Thanks

Hi all, my name is Mauro and I'm italian; I apologize for my poor english.
I'm here because I want to create a biotope like Rio Xingu's rapids, dedicated to a L046 school of fish.

I'm still looking for a solution to create a fast water-flowing.

I have a couple of question for you:

1) Did you know ...