Cookies/cream autos-newbie

Those will probably work, but you want at least two points. Most meters use 1413 uS and 12.88 mS for EC and 7 and 4 for PH and KCl for storage solution. Maybe @Lostgirl can confirm that this one does too before you buy.

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Your package should come with 3 packages of pH calibration.

They definitely will not come with EC calibration.

These pens are great. I’ve never had to calibrate the EC ever. I test it from time to time by simply putting it in the RO water or distilled water if it reads zero I know it’s calibrated.

That would only be a small part of the picture. The electrodes will oxidize over time this increases resistance and reduces the meters ability to accurately measure conductivity between the electrodes. In this case 0 is a lack of conductivity. It would also read 0 if the electrodes where too oxidized to pass a charge. Even in highly conductive solution. That is why you would need at least 2 points and neither can be zero. there has to be a differential to measure. I couldn’t give you an educated opinion on PH calibration as I’m a little fuzzy on how they actually work. even if a meter doesn’t have a calibration mode you can still test it’s accuracy by testing two different calibration solutions and comparing your results. There are a lot of factors that will determine how long the meter will remain accurate so I find it’s best to check every few months. I also go for liquid over the packets because you have to have a perfect water source for packets and I’m trying to calibrate the tool I use to test water quality. Sorry for the rant but just my 2 cents on the subject.

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So search out a liquid calibration solution for both ph and ec basically? When you say it needs 2 points does that mean it should literally read 2 when calibrated? I have to do some research on this so im not as lost in this conversation. While I have come across I havent read into EC specifically.

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I think I just got it. 2 points like the ranges.

The one I found only had the one 1413. But I should look for both instead.

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yup it needs a high and a low to ensure accuracy. Most of that is theory you don’t necessarily need to know. I’m just a nerd and don’t know when to shut up. Apera sells a pack with an 8oz bottle of each for EC and PH and a bottle of KCl storage solution for less than $50 on amazon. You probably won’t use it all before it expires in a year, but that’s about the best price I have found if you need the whole kit. it will be the PH/Cond. combo 1 under the options. Not the PH kit in the picture.

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Ok got it! Some how this will arrive before the pen lol. This seems a lot easier than stiring that powder for 5mins before it dissolves.

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Just make sure you store them somewhere dark and cool. Light and evaporation can degrade them before the the expiration date and throw off their values. I’m sure the packs work for some people, but I always have problems with them.

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I will keep it in the basement since it’s always cool down there. I was thinking about moving the tent upstairs, but for that reason I think I just have to do a better setup. The coolness of the basement I think helps it not get too hot. I might have to run more fans if I bring it up. Rt now I run one and thats been cool, if it gets too humid in there i just leave the door open some.

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heat is the enemy and can be expensive to compensate for. I would keep your tent wherever you can keep it in the sweet spot the easiest.

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