Clearing a water cooled spindle clog

Title says it all. I noticed the flow was barely moving into my spindle. Looked into my plastic water container and it looked clean but a little dust must have gotten in the water tubing holes. Anyway, I thought no big deal, I tried to blow out the water in the tube and found it was barely able to move any water thru. I took off the tubes at the spindle and was able to blow out the water but there was still some obstruction somewhere inside.

I am loath to take apart the spindle but need to clear whatever is in there. Any thoughts on what could be done? Forcing some draino is not an option as it is too corrosive.

You could try reversing the water flow to see if it will push it out.

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I got it, it was the connection I had too tight. All is well now.