Whats my deal?

I am having a hard time with my ph. And my plants are looking like they are lacking some nutes or something. Im using Ro water at 25 ppm with a 6.5 ph. I use 321 GH nutes, 600ppm. My ph goes from 5.5 to 6.3 in less than 12 hours. Any idea on how I can get my ph stable. Should I mix some of my hard tap water with my RO and use Hardwater nutes? Anything, I am tired of adding all this ph down and my plants are getting sick from it I think. Is to much ph down bad by the way? Ive added like 200 ppms of Down in the past week.

Nastydroaste said:

I am having a hard time with my ph. And my plants are looking like they are lacking some nutes or something. Im using Ro water at 25 ppm with a 6.5 ph. I use 321 GH nutes, 600ppm. My ph goes from 5.5 to 6.3 in less than 12 hours. Any idea on how I can get my ph stable. Should I mix some of my hard tap water with my RO and use Hardwater nutes? Anything, I am tired of adding all this ph down and my plants are getting sick from it I think. Is to much ph down bad by the way? Ive added like 200 ppms of Down in the past week.

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what kind of medium are you using? nutes will change the ph.

Im using only two 3 inch net pots filled with hydroton and a rockwool cube, and got three 12 inch bubbler stones in there. What do you think of mixing hard tap and RO water, it looks the plants are lacking something.

i had the same issues, you know how i fixed them??? i stopped using GH flora series and now use botanicare and never seen such stable PH, also the salt build up from GH nutes is crazy, this can throw off your solution strength and mess with PH, i suggest if you want to remain using those nutes flush monthly, but you should be good to go if you try the lucas formula. i believe it goes 2:1 micro/bloom...no grow formula and the full strength lucas is 16ml/gal of micro and 8ml/gal of bloom, this is specific for RO water, with RO water you are suceptible to cal/mag deficiencies, to be honest i never had healthy looking plants using stright up GH nutes and canned em before i could try the lucas formula

You know what, I had really really awesome plants using hardwater of 500 ppm with flora nutes and hardwater micro, when I switched to Ro water is when I started having some issues. I switched because I was told I would have issues with lockout in flower. Im thinking of going back to hardwater or a mix, what do you all think?

Check it out last grow 500 ppm water gh hardwater nutes perfect plants vigourous as fuck!! 5 and a half weeks hps


Now the current with 25 ppm water, slow growth, light color, using floros though edges jacked up, ect ph problem i beleive About a month old