Plants yellowing rapidly in hydro no matter what I do! +REP

This is my second hydro grow, third grow altogether. I started with no nutrients at first when I put the clones in the flower room (430 HPS san agro lighting source), I was going to wait until they showed signs of wanting nitrogen before I started a feeding regimen in an attempt to not nute burn this time. After they started showing some signs, I went to 260 PPM of Supernatural Grow Aqua formula (also in my feeds is root stim, myco stuff, carboload, and a couple drops of superthrive). I did notice that I was having some pH fluctuations at first that I wasn't catching; it went up as high as 6.5 at one point, but now I'm keeping everything in the 5.5 - 6.1 range. I should mention that I am running 4 diff strains - lemon skunk, casey jones, white OG, and querkle.

The yellowing continued, so I added more solution to make it 500-ish PPMs total. They all have decent root structures, so I figured they probably just wanted more.

When I got home last night after not being able to see them all day, I saw that they were yellowing even more. This didn't really look like nute burn to me and so I quickly decided that I would add another 150-200 PPM to see if that helped before sleeping.

Now in the morning, even the healthier clones are starting to show signs of unhealthiness and many more are yellowing. I did notice that there are signs of clawing, which is normally associated with overnuting your plants.

I have attached some pictures of the more unhealthy clones to hopefully help you guys get the idea. Any help at all would be highly appreciated as I don't want this grow op to completely fail.

Thank you in advance!!!

Make sure the roots are getting air and not sitting submerged all the time. I'm no hydro guru but I'd guess you've got the hydro equivalent to overwatering.

Thanks for the response mother's finest! I am currently setting the timers for the pumps to water 7 times a day spread evenly with 24 hour lighting since we're still in veg. I am guilty of turning on the pumps manually sometimes and then using a turkey baster to water the plants manually as well when I'm trying to flush with new nutrient solution, or to ensure they're getting fed (since the clones are new I didn't know if the roots had made it to through the rockwool cubes yet and I wanted to be sure the roots were getting moisture).

Any other help will be most greatly appreciated! Need suggestions that I can try out to fix this! (+REP Mother's)

What's the temperature like?

Temps run anywhere from 73 to 80 in the room right now. Trying to keep things consistent with use of AC.

Any more suggestions guys?

Try giving some ho2o you have over watered your plants. Flush with water and ho2o and you should be good don't want it to start drinking again and all thoes nutes be in the rockwool she will burn.

Don't over water. Set a timer and adjust if you need to feed more. Hope this helps

Thanks a lot youngling! What is ho2o?? How should I flush the cubes? Pour water onto cubes or put solution into reservoir? (+REP)

Bump to see if there is any more response

I heard that this might be off-gassing. Check this link out and let me know if you think this might be the prob. I'm using hydrofarm black tubing for my hydro hoses. PPM is about 500 now.

https://www.icmag.com/ic/showthread.php?t=188434&page=1

7 times a day is alot i would do like 3 one 30mins before the lights come on so the plant can get water before their day starts kinda like me and my coffee lol then a few hours on.

Changed it to 4 waterings a day. If root rot set in, is there anything I can do?

I got some advice on the other forums, so I'll just run it by you guys to see what you think.

"First I want to start by saying, I can't thank you guys enough. Your guys' advice has been invaluable and I have no idea what I would be doing at this point without you!

Here is the current plan: I plan to dump the current res today. I will hand water from the new res until they're looking back to health. I will go back to 250 PPM solution. Watering schedule will be determined by weight, and by feeling moisture as opt1c has suggested.

Do you guys think I should put hydrogen peroxide in my mix as well? If so, what kind of concentration should I be looking for? I currently have epsom salts to take care of magnesium boost, but what should I grab from the store to boost cal?

Lights have been on 24 hours a day for veg, so sadly there is no real time to get a lights off picture at this point in the game.

Does this game plan sound right? I have a shitty camera phone, but I will definitely try to post a couple more pics sometime soon.

You guys are awesome. I'm definitely learning a lot from this one =)"


Does this sound right? Thanks a lot for your guys' help!!

I want to thank you guys a ton for all your help so far. Things are definitely looking up. The root structures of the plants are most definitely healthier, the leaves are standing more erect and perky, and the color is starting to come back in the leaves now that I am gradually raising the PPM level of my feed.

I started hand watering at 350 PPM + 100 PPM of cal/mag + misc. I went up to 700 total PPM, 900, and now 1100 and things are looking better each day.

Again, I want to thank you guys for all your help. I am planning on probably topping each plant so that they're all about the same length with hopefully about 4 main colas each by the end. Did you guys like the thread on defoliation? I know that if I wanted to experiment with that, now would be the time.

More than anything I just wanted to post to let you guys know that things are doing better and I appreciate all your guys' help!!

=))