ph problem/emergency

[Hushpuppy]

Since cold temperatures was mentioned, I am about sure that the cold temps(if they were below 60 degrees f for at least a week or more) are the culprit to the issue. I don't know why but Nitrogen gets locked out when they get and stay cold. Did the yellowing start from the centers of the leaves and move out to the edges of the leaves? I lost 2 plants that had suffered too much cold and that is how they looked and did. However, being in hydro it was easier for me to get the PH straight, but never could get the plants to recover. Yours are farther along, so I think if you can get the ph right you can keep them going to the end. If you can get a good true reading on the ph then we can decide from there if you should flush or not.

I am of the mind-set that you can't drown the roots of a plant by overwatering, but you can suffocate them by not having enough disolved oxygen in the water. If you do decide to flush or if you need to run enough water to determine the PH of the run-off then make sure you aerate the water for at least several hours before pouring it on. I personally believe that if the PH is off that flushing with well aerated and ph'd water should bring you back to level. Then once the PH is straight, you can let them dry out.

 

[lumpcore]

thank you all for your inputs - after a long sh!!ty day of driving in sleet and freezing rain, i have various ph testing stuff. the soil test says its 7.5, the run off test says it's about 7 - so too high. i have been adding the lime, so am not sure if that is the cause or not. effin soil meter. i'm going to build a little fire with that thing.

the yellowing seemed to come on pretty uniformly - the lower parts just faded

I'm definately not watering them too much, they get dry and light-weight before i water again - it was averaging about once a week, once or twice they were drooping a little (before this problem got really obvious). the rh of the space is about 40%. the temp problem was out of whack initially during veg and i fixed it, got a little lax again and that's what i thought was causing the issues - but the temp has been 60ish at night and high 70's during the day - the last time i pulled it up (during veg) the plants turned around within days.

The earth juice schedule is just a jumping off point - i've never gone fully organic indoors and needed some kind of guide. the guy who posted that did a whole crazy pile of tests, and that was the one he liked the results of best and i decided to give it a try. he did warn that it would have to be individually adjusted - per strain and water source. I noticed at the hydro store that earth juice sells citric acid as ph down for 20 dollars a bottle - my brother is a chef and assures me that is ridiculous.

Classic mentions earth juice adjusts itself after a few days - i've only been letting it sit for 24 hours.

anyway, when i took the one in flower up for ph testing - things are looking a bit more green

one day, one day, i will grow nice weed.

 

[Classic]

I noticed at the hydro store that earth juice sells citric acid as ph down for 20 dollars a bottle - my brother is a chef and assures me that is ridiculous.

My hydro store won't even sell EJ pH up or down. They say they've had way too many complaints about it.

one day, one day, i will grow nice weed.

I feel your pain. I've been growing for a year now. I manage to keep myself supplied but it's nothing that I'd call dank.

I'm glad you posted this thread. Like I said, I have a very similar problem. If your pics look better than the actual plants, I suspect our plants look a lot alike. I'm pretty sure the low temps are my problem.

 

[Wetdog]

Your brother is right, you can get citric acid in the canning section of the grocery store for ~$3.

Wet

 

[The Hemp Goddess]

Food products seem to break down quite fast when used for pH up or down. Why not just order some pH down (formulated for horticulture) online? I have no problems with GH's pH down.