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15% Off Applied at Checkout *Excludes Clearance, Sale Items, and Substrates.
15% Off Applied at Checkout *Excludes Clearance, Sale Items. and Substrates.

RO Extreme Serene

$35.99
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An organic liquid kelp extract that provides plant growth promoting nutrients and botanical extracts. Our revolutionary new formula improves upon the original: We have targeted and isolated crucial components in various kelp species and added Triterpene saponins for maximum absorption. Extreme Serene captures the fast-growing power of marine kelp to encourage vigorous shoot and root growth. Use Extreme Serene in conjunction with any nutrient program or as a foliar feed.