Trying to clean up pool-swamp; Pentair DE filter stops up almost instantly

[Rrb22286]

I have a test kit. I also have got 90% of the debris out. . The pool turn from a swamp to a light green but like in said even after cleaning out the filter adding new de it sint run very long without pressure rising. I'm soaking the grids right now to see if that helps. As to my pool it's a liner emerson 1hp pump. Pentair fns plus 48sq ft filter. And 20x40

Sounds like you may be trying to filter live algae with a DE filter. That will not work -- live algae stops up DE almost instantly.

1. Get a OTO/phenol red test kit, locally (Walmart, Kmart, Lowes, etc.)

2. If you haven't already done so, remove all the physical debris (leaves, branches, etc.) from the pool. There's no point in trying clean it up till that's done.

3. Describe your pool: concrete/vinyl/FG; pump make/model; filter make/model, pool dimensions.