I actually have 2 pumps right now. They both have pipes coming from the sea and from the fish farm. I haven't finished the fish farm part yet. However, I've been alternating between them since I installed them. When the controller gets here (it is already shipped) I will have both pumps and the props on alternating timing.
Actually I cannot run both pumps at the same time; the refugium's flow is slower than that and the first chamber starts overflowing everywhere

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I see you are from the Maldives :wavehand:. I loved visiting the country. Planning another trip. I've taken so many pictures while there but there is one I like most: I said to my wife "even their lizards look nice :lmao:. I had it as a background for years after coming back.
You are always welcome here. if you are coming again let me know, we can explore the seas of Maldives.