That’s
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The ph probe is replaceable. The ec probe is permanent. The cap for the ph probe holds kcl storage solution. It works
Same problem i had.In plastic you can just pore it in and it will water evenly ,but with these it wants to pore out the sides and takes twice as long to water.It air prunes so the roots don't get bound, but with organics, you don't want run off, or dry spots. They seem to work good with coco though.