So, looking at a lot of the latest DC Return Pumps and a lot of them (including submersible only pumps) are including some kind of pulsing mode. I will preface this with the fact that I am going to be starting my first build with a sump ever, I have had a few FOWLR tanks in the past, the longest one running for 10-11 years, but those tanks were all run on canister filters, powerheads, and hob skimmers. I just recently got an AIO for my daughters first tank and can already see the benefits that a full sump system will provide for me.
All that said, as I understand it most of the time return pumps are run at a single consistent speed to keep the return chamber level from fluctuating and triggering ATO's. So why would manufacturers suddenly start making return pumps (a submersible only should be used exclusively as a return I would think) that have pulsing type modes? I ask because I was considering purchasing two Sicce SDC 3.0's and running a dual return on my new tank. This helps for redundancy, but because the returns are posted at each end of the back panel, and these pumps have a "tide" mode, I was wondering if letting them mimic a tidal current (opposite each other in a counter-sync/anti-sync mode), while my wave makers provided the randomized flow patterns would have any benefits or drawbacks. presumably, if they are 180 degrees out of phase with one another (as a true anti-sync should be), the flow would be consistent, and therefore the level in the return chamber should be constant, no?
All that said, as I understand it most of the time return pumps are run at a single consistent speed to keep the return chamber level from fluctuating and triggering ATO's. So why would manufacturers suddenly start making return pumps (a submersible only should be used exclusively as a return I would think) that have pulsing type modes? I ask because I was considering purchasing two Sicce SDC 3.0's and running a dual return on my new tank. This helps for redundancy, but because the returns are posted at each end of the back panel, and these pumps have a "tide" mode, I was wondering if letting them mimic a tidal current (opposite each other in a counter-sync/anti-sync mode), while my wave makers provided the randomized flow patterns would have any benefits or drawbacks. presumably, if they are 180 degrees out of phase with one another (as a true anti-sync should be), the flow would be consistent, and therefore the level in the return chamber should be constant, no?