Cross-post from Reddit. Pacific NW, plz no haters on shoes.
I am lucky enough to have the use of relatively-clean irrigation water for my 35k+ gallon pool. I really don't like using city drinking water given the size of my pool when I have access to irrigation. Depending on the year, it can come in silty since it is pumped directly from snow-melt rivers. Never had a problem with algae, never smells. Using directly, it clouds my pool and takes 1-2 days for the sand filter to catch up. Clarifier helps but I hate the cost and often I just need to top-off the pool, which introduces cloudiness.
What I want is some kind of inline filter that catches the silt before it enters my pool. I have tried several different kinds, but either I don't understand how they are working, or the silt gets by. The attached pic shows 5 gal baseline of tap water on the right "T". The middle bucket "B" is straight from the irrigation, which would obviously cloud my pool. The bucket on the left, and I can't explain why, is same irrigation water run through a 10-15 micron cartridge filter that I was trying, to see if it could filter it - there is an "A" on the bottom you can't even make out. The second pic is the same cartridge filter but cleaned and filtering tap as a control (ignore the floaters, buckets were left overnight).
As mentioned, my sand filter can clean it but takes time. A cartridge filter makes it somehow worse - how are others doing this?

I am lucky enough to have the use of relatively-clean irrigation water for my 35k+ gallon pool. I really don't like using city drinking water given the size of my pool when I have access to irrigation. Depending on the year, it can come in silty since it is pumped directly from snow-melt rivers. Never had a problem with algae, never smells. Using directly, it clouds my pool and takes 1-2 days for the sand filter to catch up. Clarifier helps but I hate the cost and often I just need to top-off the pool, which introduces cloudiness.
What I want is some kind of inline filter that catches the silt before it enters my pool. I have tried several different kinds, but either I don't understand how they are working, or the silt gets by. The attached pic shows 5 gal baseline of tap water on the right "T". The middle bucket "B" is straight from the irrigation, which would obviously cloud my pool. The bucket on the left, and I can't explain why, is same irrigation water run through a 10-15 micron cartridge filter that I was trying, to see if it could filter it - there is an "A" on the bottom you can't even make out. The second pic is the same cartridge filter but cleaned and filtering tap as a control (ignore the floaters, buckets were left overnight).
As mentioned, my sand filter can clean it but takes time. A cartridge filter makes it somehow worse - how are others doing this?

