Water moisture monitor

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Hectorsgaf
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Water moisture monitor

Post by Hectorsgaf » Tue Apr 20, 2021 11:02 am

Hi
Does anybody use one of these? Are they any good and if so which is the best to buy? Thank you
Simon
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Ross M
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Re: Water moisture monitor

Post by Ross M » Tue Apr 20, 2021 11:26 am

I just use the plants as monitors - if they look thirsty they get a drink
Ross

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Hectorsgaf
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Re: Water moisture monitor

Post by Hectorsgaf » Tue Apr 20, 2021 11:50 am

Ross M wrote:
Tue Apr 20, 2021 11:26 am
I just use the plants as monitors - if they look thirsty they get a drink
haha. Part of my problem. My little guys NEVER look thirsty. :???:
Simon
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edds
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Re: Water moisture monitor

Post by edds » Tue Apr 20, 2021 12:03 pm

I've got one. Just the stick in pH /Moisture type sold in most garden centres. As a relative newbie I find it useful to check, especially on larger pots, that they have dried out all the way through before watering again. Otherwise I'm a bit too heavy-handed with the watering can!
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Ross M
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Re: Water moisture monitor

Post by Ross M » Tue Apr 20, 2021 2:49 pm

Sorry Simon. I know it's easier judging with some plants than it is others. Moisture meters have been around for a long time now but I was always wary of their accuracy and whether I'd likely risk damaging roots by probing deep into the pot.
Ross

Dunbar, SE Scotland.
BCSS member #46264 (originally joined 1983).
Growing cacti since 1978, with a particular interest in Sulcorebutia and Rebutia.

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el48tel
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Re: Water moisture monitor

Post by el48tel » Tue Apr 20, 2021 3:17 pm

I have variety described by edd.
"It's a guide only" I was advised by an old hand. Yes he also mentioned root damage by the probe. Another old hand recommended a sharpened pencil. Stick it into the compost. If it comes out clean, the pot is dry.
Attempting to grow Aeoniums, Aylostera, Echinocereus, Echinopsis, Gymnocalycium, Lithops, Matucana, Rebutia, and Sulcorebutia.
Currently being wooed by Haworthia, and attempting hybridisation.
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Re: Water moisture monitor

Post by edds » Tue Apr 20, 2021 6:22 pm

Absolutely a guide only - I feel it is only accurate enough to say something is thoroughly dry as in my potting mix they never seem to register above moist even after a good soaking! But when it says it's totally dry it seems to be accurate.

Bamboo skewers are often advised to put in orchid pots to use in the fashion Terry described for pencils. If the stick is damp so's the compost!
Ed

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el48tel
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Re: Water moisture monitor

Post by el48tel » Tue Apr 20, 2021 7:52 pm

It depends entirely on the salts in the compost to conduct electricity. If the compost is low in salts and the water is not free to move .... no conduction ... so it will appear to be no water present.
Attempting to grow Aeoniums, Aylostera, Echinocereus, Echinopsis, Gymnocalycium, Lithops, Matucana, Rebutia, and Sulcorebutia.
Currently being wooed by Haworthia, and attempting hybridisation.
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Re: Water moisture monitor

Post by Apicra » Tue Apr 20, 2021 10:13 pm

I simply look at the potting compost around a plant to see if it is wet. If you don't use any grit top dressing, then dark potting compost is obviously still wet. A few days after it turns light in colour and watering can be considered again, since lower parts of the pot will then be becoming dry. Moral of story: if you don't hide your potting compost, you won't need a gadget!

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Derek Tribble
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Stuart
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Re: Water moisture monitor

Post by Stuart » Wed Apr 21, 2021 9:20 am

I 'hide' my compost mix under grit, no reason other than it makes the plants look better. The grit works in the same way for me as the soil does for Derek. It's a different colour when wet and any plant where the grit doesn't change colour back to the dry colour hints at a root problem. With smaller pots, it's easy to pick them up and feel the weight to see if they need watering. No gadget needed though I'm sure someone will have invented something for a phone that sends a message from the plant when it thinks it needs a drink.

Stuart
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