Is Cobalt the only making a proper inline configuration? They hold the IP, or are they just not popular?
www.cobaltaquatics.com
I bought a couple of these a quality decade ago & one's still running fine, but takes quite a bit of power for the water movement & isn't adjustable - is there anybody making similar in DC?
I'm trying to move all of my tanks onto external pipe and/or pail filters, but am only really finding pond/fountain pumps with grates at the intake so can't work external. Something with submerged and wall-mount option would be what I seek (as per the Cobalt)

Cobalt EXT Inline Pump
The only pump in its class that features integrated 5/8" hose barbs and locking rings, the Cobalt Aquatics EXT inline pump's unique design can be installed internally or externally. It can be positioned to push or pull water through your system, allowing complete flexibility on any aquarium...

I'm trying to move all of my tanks onto external pipe and/or pail filters, but am only really finding pond/fountain pumps with grates at the intake so can't work external. Something with submerged and wall-mount option would be what I seek (as per the Cobalt)