@whitetiger61: Thank for your compliments...the stream took me a lot of time.
@Steven: follow your advises, I have replaced the tall grasses in the right corner by Bolbitis but need to wait for them to grow...the stucked rock had been moved a litle bit...
@Jubs: I don't know how to modify the left back side...My object is to make a grasses hill...
And now I will update my tank after one month:
Front:
Higher view:
from the right:
I like to use only one lamp from the back side to take picture...
Using the front lamp is not bad idea:
The Dreaming stream is more natural now...

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