Cars now suffering from Diesel Bug?

As a matter of interest, I've not had to drain our water trap/sediment bowl in the 10 years I've had this boat but haven't a clue what's lurking just below the level of the pick-up pipe. As I can't get to my tank inspection cover without cutting a hole in the galley worktop, I've bought one of the electric drill pumps and will see if I can drop a pipe down through the hole drilled for the Eberspacher stand pipe.

Why not just drop the end of a PELA suction catheter into the bottom of the tank via the filler pipe, assuming of course the tank isn't so remote that the pipe has a tortuous route? It's a relatively easy way to at least sample whatever may be lurking at the bottom, and remove water.
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Why not just drop the end of a PELA suction catheter into the bottom of the tank via the filler pipe, assuming of course the tank isn't so remote that the pipe has a tortuous route? It's a relatively easy way to at least sample whatever may be lurking at the bottom, and remove water.

Fairly long and twisting filler hose with 90 degree elbow into the tank. I can access the Eber stand pipe and from memory, the hole will be at least half inch when it's removed. Tank's around 4 ft deep so the drill pump should have sufficient suction and bore size to suck up any debris.
 
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