Hi all, I would like some help please. I have a 30g. wide and am using a penguin 200 for filtration. It's only turning over ~7 x the number of gallons per hour instead of the desired 10 x. My plants are not gently swaying and this concerns me. The two options that I know of to improve this is to add another filter of same size and place them equally at the 1/3 point in the tank (from left and right), or get a small powerhead. I was going to get another penguin to increase water flow and add more filtration. So, I experimented by moving the existing filter over to the 1/3 mark on the tank; it did nothing to improve the movement of the plants in that 1/3 section of the tank. So, although I would be doubling the water movement by using 2 filters, it doesn't appear that it would help in actually moving the plants. Thoughts?