We've been running grey water for a few years and intermittently opening the taps at the end of the purple lines to flush out accumulated gunk, but for one reason or another, we left it a bit long between flushes recently and two of our lines are quite blocked and need some tips on how best to clear them.
One will trickle out when the tap is fully open, the other doesnt have anything flush out. The other 2 of the four lines have water flowing freely when opened. Both of the blocked lines have had a 1m piece of thin bamboo inserted to full length to help clear them - one of them now runs at a trickle (as above) the other it made no difference.
Tips for clearing out the lines?
Cheers in advance!