filter just shot a brown cloud into pool after vacking

[Smearm]

Hi Everybody

I just got my pool pretty clear, I vacuumed to waste, turned off the filter, switched it back over to filter, turned the filter back on, and it shot an enormous brown cloud into the pool for about 5 seconds. What does this mean?

thanks
Andy

 

[JasonLion]

The most common reason for that to happen is if you were vacuuming with the filter set to backwash, instead of filter.

 

[Smearm]

I was vacuuming to waste (not backwash) - I had a lot of fine silt at the bottom. After being done vacuuming I disconnected it and turned the filter back on to filter mode and a giant brown cloud shot out of it.

Does this mean I should backwash the filter, the pressure is at about 20... it stays typically between 17 and 25

 

[JasonLion]

Did you switch to rinse for 30 seconds before going back to filter? Very fine silt can pass right through the filter, and there could have been a fair amount of silt still in the piping when you switched back to filter. Rinse clears out anything in the pipes.

 

[Smearm]

No, I didn't.
I switched it right back to filter.
Ughh.
At least I know now.
Thanks