How are you measuring your pH?

I know "how" and I know the different types of systems...but what do you use, model and all?

I've read people getting it 6.25 and similar but I don't understand how. My up/down kit came with a little tiny chart but they only go by whole steps, not .25 or .5 steps. The pens i've heard are no accurate even with buffer and calibration solution. I don't want to spend 50 bucks on a system but i'd like to get my setup under the most control I can for ~30 or 35 bucks. Most preferably off amazon as I have a gift card.

I use a Milwaukee PH pen. 20-30$. I keep the pen in a storing solution. And I have a calibration liquid that is reusable. Total cost was about 50$ But I get the exact results I want. I also as a backup have PH drops which are very nice as well, very cheap too.

1. Pour water into a 1 gallon container.
2. Mix in nutrients.
3. Check PH of water.
4. Add PH up, generally 1 tablespoon brings the water up from 5.6 to 6.3 (I know my water is usually in the mid 5's after I add nutrients). It all depends on how strong my nutrient mixture is. IF I don't add nutrients then I have to PH down my water with about 1/8th teaspoon of PH down to bring it from 7.4 to 6.3.
5. Re-check PH to ensure it is correct if I feel unsure about anything.

Cool, is there a best type of storage and calibration solution? I want to be confident in the readings...

It depends on the PH pen you have. Each brand has it's own solution. Check with your local hydroponics store, they will know.

Sadly, I don't have one within 70 miles. Amazon mathes the Milwaukee pH 7.0 solution with the Milwaukee 600 AQ. Would this be correct or would I need the 4.01? Also would I just get the matching (7.0) storage solution?

bump1987 said:

Sadly, I don't have one within 70 miles. Amazon mathes the Milwaukee pH 7.0 solution with the Milwaukee 600 AQ. Would this be correct or would I need the 4.01? Also would I just get the matching (7.0) storage solution?

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For the Milwaukee you'll want http://www.amazon.com/Storage-Solution-pH-ORP-Electrodes/dp/B003U54120

and you'll only need PH 7.01 or w/e, the 4.0 isnt really necessary at all.

Alright cool, I missed where they suggested the GH 7.0 calibration solution, surely that will work? Thanks for all the help.

I just use the red PH liquid... I have a PEN but like the basic approach more.. If the sample turns 'Piss-Yellow' we're all good - STELTHY

bump1987 said:

Alright cool, I missed where they suggested the GH 7.0 calibration solution, surely that will work? Thanks for all the help.

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GH stuff works fine I used it for my Hanna Grow Check and its a hell of a lot cheaper.

Using the paper test strips. 160 strips for £2.25. No calibration (obviously!), always accurate, ideal for hydro tanks.

I use the 7.0 calibration solution. or that Milwaukee pen, try calling around to some of the higher end Aquarium Shops. Any good aquarium shop should carry a pH pen, and around here the Milwaukee seems to be the pen of choice. I got mine for $40. BTW, you in soil or going Hydro?