Hello, I use an eden 521 800l/h filter in an aquarium of 51 liters, the problem was that the co2 was not well distributed in certain places, the plants moved little in spite of the rule of 10x the volume of the aquarium. I make tests, currently, I use the exit of the filter to diffuse the co2 with an inline atomizer, the powerhead is connected to a spraybar, it has a flow rate of 1500l/h, now all the plants move as you can see it on the video I don't have any fish, just snails, is the flow rate too high for the development of the plants? thx
Video
Video