Moisture meter for use in lava rock planting medium

We purchased a Kentia palm that was potted in Hawaii in lava rock. I tried inserting the moisture meeting I use for my indoor plants potted in regular potting soil but the meter wouldn’t go down and as I forced it the meter bent out of shape. Are there meters that are strong enough to be used in lava rock planting material?

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1 Comment To "Moisture meter for use in lava rock planting medium"

#1 Comment By GKH_Susan On 03/03/2020 @ 5:01 pm

The pro model moisture meters have a thicker probe. Although I can't guarantee that your lava rock planting medium will accomodate a moisture meter at all if it's that tight or rocky or root bound. Be sure that it has good drainage. If any doubt, re-pot, because it is vitally important.

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