hydro store messed up ph calibration HELP STINKY

[biggzhse]

hey i was in my hydro store today saw the calibrating meter i asked did they do mine they told me to bring it in the said it was off so they calibrated now all it reads is very high like 11.4-16.0 ph
dumped alot of ph down no change scared to feed my plants the open tomorrow at noon what to do just wait?

[keeko]

hey i was in my hydro store today saw the calibrating meter i asked did they do mine they told me to bring it in the said it was off so they calibrated now all it reads is very high like 11.4-16.0 ph
dumped alot of ph down no change scared to feed my plants the open tomorrow at noon what to do just wait?

when you took it in was there any problem with it? or just checking it?

[biggzhse]

saw them calibrating one mine was never calibrated i didnt know it had to be only had it a month first grow was having ph problems ph jumping all over so i went home and got it NEVER should of done that my ppm meter reads 1 not gonna feed plants just poured distilled water in the net pot was going to start flower friday now dont know plants look sad

[moneyshotpb]

i would think plain water with nothing would be better than the ultra low ph you could have made.I would drain reservoir imediataly and replace with un PHed water

[stinkyattic]

I agree with moneyshot, and it is also my strong opinion that we should all have the little 2 ounce bottle of GH liquid pH indicator handy at all times to verify that indeed our pH calibration is correct. This is similar to the 'outside check' concept in analytical chemistry, where you check the accuracy of your calibration on a solution of known pH that is NOT one of the calibration standards- but in this case, you're using a different TOOL to check the SAME solution. Well, your res anyway.

If you own a pH meter you also need to have a set of calibration buffers, or you're wandering around in the dark.

Also, if you are using distilled water you have to use calmag.

[stinkyattic]

Oh shit I didn't see that the hydro shop DID a cal for you. That is really freaking weird. I'd take it back and find out what they did, and have them re-check it against their buffers. What is the brand of meter?

[texas grass]

you would think they got it right,unless the guy was a complete braindead stoner or he has never done it before. theres a possibility it used a different fluid. like mine uses a 6.86 instead of a 7.01 fluid to calibrate. get the liquid drops for backup and additional testing. get right calibration fluids. calibrate yourself, should beable too

also sometimes it takes more than 1 time to calibrate right and maybe something freaked out on the meter while calibrating it.

also any time the ph meter sits for a while or battery goes out it should be calibrated/checked to be safe it is working properly

[biggzhse]

all is good they gave me a brand new one and calibrated it

[Twentyinches]

braindead stoner

lol...ide go with brain dead, as the stoner part could help him :jointsmile: