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Square Foot Gardening Forum
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Soil  moisture or pH test probes  Toplef10Soil  moisture or pH test probes  1zd3ho10

Hello Guest!
Welcome to the official Square Foot Gardening Forum.
There's lots to learn here by reading as a guest. However, if you become a member (it's free, ad free and spam-free) you'll have access to our large vermiculite databases, our seed exchange spreadsheets, Mel's Mix calculator, and many more members' pictures in the Gallery. Enjoy.

Soil  moisture or pH test probes  I22gcj10Soil  moisture or pH test probes  14dhcg10

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Soil moisture or pH test probes

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Post  plantoid 4/20/2013, 7:11 pm

Perhaps check your metres against something you know to be reasonably correct.

If you have such a device that you can test the moisture or the pH of the soil or MM you might have to do what I had to do this afternoon.

I hadn't used them since early March and they developed a dark tarnish on the copper probe.

This tarnish is an insulator , gives a high circuit resistance and thus affects the readings of the meter tremendously .

Simple use some soft wire wool or some very very fine wet & dry or some slightly abrasive stainless steel sink cleaner to clean the tarnish off so you get clean bright copper .


Doing this took what I knew to be sopping wet plants giving a reading of dry to what it should be at very wet ( I'd just watered them )

plantoid
plantoid

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