Hydroponic Wetting Agent Alternative to SM-90

Hello
First year with hydroponics and using the halo drip rings. Was reading about the need for a wetting agent and the article recommended SM-90. I’ve discovered this is no longer available.

Any recommendations as an alternative to SM-90?

I found this on Amazon.?

Yucca root

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I second that. I use RAW yucca. Pretty expensive per weight, but a little goes a long way.

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@Glitch
@Outlaw
Thanks. I ordered some Yucca Root and will give it a shot

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