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industrial liquid IBC totes - sodium polyacrylate

Posts: 73
Location: Douglas County, WI zone 4a 105 acres
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We got 3 last Fall with label of sodium polyacrylate. Been closed all Winter - look clean inside - no powder. Looked up SDS, doesn't sound too scary - no info on how to clean.
Need to set them up for watering garden using water from our sump pump - heavy in iron. Have just power-washed with water only. Any and all advice would be well-appreciated.
Posts: 705
Location: Canadian Prairies - Zone 3b
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Well, this is an opinion from the Internet, so it's worth what you paid for it, or perhaps considerably less, but here goes ...

My DW uses a water absorbing/releasing gel in flower pots. I'm guessing it's probably sodium polyacrylate based. We keep the soil separate and it's our preference to not use it in our tomato growing barrels.

But really, I'm not finding anything about sodium polyacrylate that would personally stop me from using those totes for garden water. It has such an immense affinity for water that filling it and letting it sit for a while should remove most traces, and I can't see how it would seep into the structure of the poly the way some chemicals do.

If I were being extra careful, I would perhaps wash them out with a soap or TSP solution, and discard the first filling after it has sat for a couple of weeks.

That's my 2 cents' worth.
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