Quote:
Originally Posted by Koala Doug
One thing to be aware of is the build-up of salts in the growing medium.
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No buildup with organic fertilizer. I do use Calcinit and epsom salts as a supplement, so there is a tiny bit at the top,that thin layer is scraped off when I replenish.
My whole Earthboxes are solarized with a clear plastic bag completely sealed around them every summer.