Aqua Ultraviolet
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- Jul 21, 2026
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Of the two, the VarioS-8 or the Sicce SDC 9.0 fits your goal. The 6 is too small.
Rated flow is at zero head, so you’ll get noticeably less once you add vertical lift and plumbing. The VarioS-6 tops out around 1,585 gph on paper, so it would be near max just to reach your 1,500-1,600 target. The VarioS-8 (around 2,100 gph max) and the SDC 9.0 (around 2,400 gph max) can hit that range at roughly 70-75% with room to spare.
Two other DC options in that range are the EcoTech Vectra M2 and L2. They’re quiet and app-controllable, but they cost more and have a shorter warranty.
Before you buy, check the manufacturer’s head-loss chart against your actual lift, fittings, and pipe size. Also check the sump or return chamber depth, since the pumps are fairly large. A controller with a feed mode or battery backup is a good idea, because DC pumps don’t restart on their own after a power loss on some models.
If you run two returns, a ball valve on each lets you balance the flow.
Rated flow is at zero head, so you’ll get noticeably less once you add vertical lift and plumbing. The VarioS-6 tops out around 1,585 gph on paper, so it would be near max just to reach your 1,500-1,600 target. The VarioS-8 (around 2,100 gph max) and the SDC 9.0 (around 2,400 gph max) can hit that range at roughly 70-75% with room to spare.
Two other DC options in that range are the EcoTech Vectra M2 and L2. They’re quiet and app-controllable, but they cost more and have a shorter warranty.
Before you buy, check the manufacturer’s head-loss chart against your actual lift, fittings, and pipe size. Also check the sump or return chamber depth, since the pumps are fairly large. A controller with a feed mode or battery backup is a good idea, because DC pumps don’t restart on their own after a power loss on some models.
If you run two returns, a ball valve on each lets you balance the flow.
