JeF4y;769057 wrote: It depends on your tank size and rock-scape, but in general if you can get the two pump streams to converge somewhere it is usually a good result.
I.e. in a smaller tank, take those two pumps and install them around 1/3 of the way down the back glass or in the rear corners of the tank. Aim one dead center at the front glass and aim tr other one slightly higher. When the two converge it should provide a pretty decent random flow pattern in the tank.
In the end, you just play with it to see what works best.
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