Ph Up & Down increase ppm?

i've never had that problem before butit is conceivable that u got a false reading if u were using powder ph up/down. did u use a powder or a liquid. also if u are using a bubbler i find that my tds meter will give false high readings if u are tds'ing over the top of the air stone. best bet when taking readings do it in a calm part of the res. also wait about 2 - 3 minutes after u add ur up and down. hope this helps.

Thanks a lot monkey, I am using powder ph up and down...is this not a good thing to do? Thanks 4 the help.

no powder is cool but is it a hydroponic ph or a swimming pool ph. swimming pool ph isnot the same and should only be used in on emergency basis. if it is a hydro powder ph then get ursef 2 gallons of distilled water and and putit in a dark container and keep it cold so it wont develop mold. add some ph up to one gallon and ph down to theother gallon. now when u need to adjust it will already be liquid and wont affect ur ppms. also it will be ez er to adjustbecause u already know the ph of the distilled water just adjust ur nute water by adding a lil bit at a time and voila. the next time u need to adjust ur ph a point or so u will know the exact amount to add. good luck bro.

K thanks a lot it is def pool ph up and down so I guess I'll head to the store and grab some real liquid stuff.
Thanks for looking out...love the pic by the way.

Im using gh ph up and down and it does effect my ppm and i know my nutra dp tri meter is on point so i have the same problem

Originally Posted by martyshoemaker

I took my ppm's b4 adding ph up. it was 400ppm then I added the ph up to get the ph right and then took the ppm again. It was 900ppm afterwards! Is this normal or what's up?

Originally Posted by jovaniramos420

Im using gh ph up and down and it does effect my ppm and i know my nutra dp tri meter is on point so i have the same problem

Marty and Jovani420 whats up fellas. Im so glad ta hear that Im not the only one experiencing this! My PPMs have recently been jumping from 12-1300 to 16-1700 and its been confusing the hell outta me for the past week! It just dawned on me yesterday that the only thing Ive added to my res is PH down but everybody keeps tellin me that PH adjusters dont have any affect on PPMs. So I did a lil experiment... I took a glass full of pure RO water with a PPM of 10 and added about 3 drops of PH down. Then I stired it up, let it sit for a minute and tested it again. The PPMs were over 100! I added another 10-15 drops and the PPMs shot up to 750! So either Im completely insane or PH down does increase your PPMs, and it increases it a lot too! And I use the liquid so it obviously doesnt matter whether it powder or liquid Marty.
Im just wondering if this increase in PPMs will affect my plants at all? I mean I wouldnt think it would cause over feeding since the extra PPMs arent from nutrients ya know???
Anybody know anything about this at all? Cause this has got me stumped!

Originally Posted by chief greenleaf

Marty and Jovani420 whats up fellas. Im so glad ta hear that Im not the only one experiencing this! My PPMs have recently been jumping from 12-1300 to 16-1700 and its been confusing the hell outta me for the past week! It just dawned on me yesterday that the only thing Ive added to my res is PH down but everybody keeps tellin me that PH adjusters dont have any affect on PPMs. So I did a lil experiment... I took a glass full of pure RO water with a PPM of 10 and added about 3 drops of PH down. Then I stired it up, let it sit for a minute and tested it again. The PPMs were over 100! I added another 10-15 drops and the PPMs shot up to 750! So either Im completely insane or PH down does increase your PPMs, and it increases it a lot too! And I use the liquid so it obviously doesnt matter whether it powder or liquid Marty.
Im just wondering if this increase in PPMs will affect my plants at all? I mean I wouldnt think it would cause over feeding since the extra PPMs arent from nutrients ya know???
Anybody know anything about this at all? Cause this has got me stumped!

SOMEONE HELPPP!!!! I have the same exact problem! I am waiting for my hydro store to open but i need to water my babies.........

Anyone>? thanks

I'm not sure on this answer, but dont you have to wait 15 minutes after adding all that pH stuff to get a valid base reading? Still has to dissolve........... What happens when you check ppm 15 minutes after pH is adjusted?

Todays water change day, might make this one of my experiments.