I am getting my 2nd 6000 stream for my 125, I was wondering what is the best placement for the 2 pumps.Currently I have the 1 stream blowing from one side to the other with 2 rio pumps on the other side. The rock work is a basic wall against the back of the tank. Also do you think that the rio's should be removed? Will the rio's interfere with the flow of the streams. The rio's are not sieo's they are the just the regular one's but were the strongest ones when I got them not sure of the size or gph.