Sailing things right

This is the standard fuel filter. I need a standard salt water filter to protect the pump from the debris in the water. The standard filter cartridge is made with ordinary metal and will dissolve in salt water within a month. I had to invent some solution to replace it and do the job. So, my habit of saving various items with the reason "might be useful later" paid again. The empty bottle from the ibuprofen fits perfectly after 5 minutes of careful adjustments. :)
Now I have to find my Dremel and make a couple hundred tiny holes in it.