Any creative way to put a thermometer and ph meter inline? - The Planted Tank Forum
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post #1 of 6 (permalink) Old 11-15-2019, 08:43 AM Thread Starter
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Any creative way to put a thermometer and ph meter inline?

I've got a milwakuee ph meter and some other brand of a thermometer which also acts as my heater on/off switch.

These work well but I'd like to get them out of the actual tank. The ph meter is big and bright yellow which really distracts from the overall tank aesthetics.

Is there some kind of fork or tube I can splice into the line and drops the ends of these guys into?
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post #2 of 6 (permalink) Old 11-15-2019, 11:24 AM
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I have seen DIY inline heaters that utilize PVC along with adapters to tubing and push to fit rubber gaskets. The DIY section here should have several examples and you can definitely find them online as well. It may work for your needs. I forget what they call the rubber grommets though.


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post #3 of 6 (permalink) Old 11-15-2019, 12:50 PM
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Quote:
Originally Posted by Freemananana View Post
I have seen DIY inline heaters that utilize PVC along with adapters to tubing and push to fit rubber gaskets. The DIY section here should have several examples and you can definitely find them online as well. It may work for your needs. I forget what they call the rubber grommets though.
Correct, you can use PVC and uniseals to accomplish this. I used a DS18B20 temperature probe (you'll need some electronics to read the temperature and report it. I used LetsControlIt and a small Wi-Fi microcontroller to feed the information to my home automation system) and an appropriately sized uniseal. I also put some silicone around the inside of the connection, though it probably isn't necessary because uniseals are great. You can do the same thing with a PH probe as well - just buy the probe first and use something accurate, like calipers, to measure the diameter of the probe so that you get the right size uniseal. I think that King of DIY had a video on using uniseals to make an inline heater that you can use for general reference.
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post #4 of 6 (permalink) Old 11-17-2019, 10:06 PM Thread Starter
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Thanks guys. I ended up finding the PVC and uniseal videos too.

However, I'm worried that I have to get the PVC size perfectly fit or else it will mess with the pressure of the water in the normal tubing. Would there be issues here if the pvc pipe would be too big or small?

I'm also wondering if they even make uniseal small enough for the thermometer probe. It's less than a center in diameter.
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post #5 of 6 (permalink) Old 11-18-2019, 01:51 AM
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They do make probe measurement cells for this type of use.


https://www.aquariumcomputer.com/usa...surement-cell/
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post #6 of 6 (permalink) Old 11-18-2019, 11:16 PM Thread Starter
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This would be great. Too bad I'm not sure that my ph meter fits inside it.
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