hi, whilst renewing the bath outlet pipe, i noticed in the drain (used by
the washing machine) a very large congealed chunk of white crumbley powdery
stuff. i'm pretty sure it is formed from unused washing powder that has
passed through our washing machine (AEG oko-lavamat 610). Since it has the
same texture and appearance as the lumps you find in the washing powder
packet. ie persil colour care. the powder is put in a plastic ball and
placed in the machine. but large chunks of stuff in the drain, cannot be
right?

anyone any idea what's going on here please?