I run my skimmer with Ozone and set for a very dry foam. Consequently I get a thick sludge. I add the sludge to a 5 gallon pail and then fill with freshwater. I had some squash plants that were showing yellowing on the leaves which is a sign of a deficiency so I put the sludge mix around them. 2 weeks later the leaves were all a vibrant green.
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