Need a Decent PH tester?

[cpt chronic]

I bought this one for $25 on ebay and I have been adding PH down to my res, but everytime I check it, it just fluctuates from 6.5-7 then down to 6 then up to 6.5 then back to 6 then back to 6.5.

So help me pick one please.

 

[Tejas]

What brand is it?

They need calibration on occassion, you should get some calibration standard liquid to check it against and to calibrate it with. I believe that General Hydroponics has the calibration standards for ph. It's a liquid that you put the ph measuring device in and it should read to the exact ph as what the standard is.....it's to calibrate to and to check device against.

 

[Droopy Dog]

Check out eseasongear.com for plenty of info and good prices on just about every make/model/price range.

DD

 

[420]

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