Deficiency issues please help

[IndicaFarms]

I have been away from growing for a while and have run into a deficiency that I have never encountered before and unfortunately am terrible diagnosing deficiencies. I hate having to bother you kind folks but I need help.
For starters the strain is Lemon G a strain that is sort of popular in my part of town. Its always been rather easy to grow. I am using Sensi bloom A and Sensi Bloom B ph perfect nutes with R/O water with a PH of 6.0 in Happy Frog soil.
I believe it to be a possible iron deficiency but am uncertain. I did read what was in my nutes and noticed there is no iron in either solution part A or part B. So here are a couple of pis that you may help me out.

 

[mr.brunch]

could be a few things... think yellowing between the viens is magnesium def., not 100% tho sure someone can step in?

tbh mate, i grow in soil, and since i switched back (a few years ago noe) to good all round miracle gro every week and half i have had no def. probs

 

[IndicaFarms]

See that is why I posted I knew what ever I guessed would most likely be wrong. I even thought it might be the lights being to close so I raised them a bit now the lights are about 12" above the canopy. I recently installed glass and a blower to my hood so I figured this round I could bring them closer that I used to.

I guess its back to reading more info to see what to do in order to rectify a magnesium issue.

 

[mckb024]

could be a few things... think yellowing between the viens is magnesium def., not 100% tho sure someone can step in?

tbh mate, i grow in soil, and since i switched back (a few years ago noe) to good all round miracle gro every week and half i have had no def. probs

Sounds like mr. brunch is right on!
I would suggest adding some cal/mag because of the fact that you are using R/O water. best of luck

 

[IndicaFarms]

Thanks guys I have never used the nutes I am currently using nor did I use R/O water before this grow. I am now learning that the water I am using does not have all the minerals my house water does. Probably wht I have never come across this before. Anyways thanks a lot guys I knew this was the place to ask. Funny how if you do't use it you loose it(growing knowledge)

 

[mckb024]

I know of people who make a mix of well or city water with R/O and that may help. peace

 

[SeaMaiden]

Mg- is shown on the lower leaves, not upper. It begins as a yellowing (chlorosis) inside the leaf margins, and then progresses to full chlorosis, then leaf death. It is very easily corrected by giving a foliar feed of Epsom salt at the rate of 1/4tsp/gal (be sure to use washing up soap or similar surfactant so it can penetrate). I do not believe this is a Mg-.

I think those plants look straight up light burned, if not also rather overfed/nutrient burned.

I also see signs that they're experiencing a burst in growth, based on the lime-greenish color of the newest growth. I would hesitate to push anything but available nitrogen, and I would be careful pushing it.

Unfortunately, I don't use hydroponic store nutrients much, and am unfamiliar with the fertilizers you're using.

That leaf curling under is something I've seen with root aphids. I'm not suggesting those as an option at this point, but when I found myself chasing phantom deficiencies, it took rock solid genetics going hermie on me to finally be convinced. Once I began addressing the issue as a pest and not a deficiency things began to turn around. It was a long, difficult, unproductive road.

So, if you truly think it's a Mg- then use the Epsom salt as I outlined above (I don't think that's what it is, but more whole plant shots that are in focus would be really helpful here). If it greens up quickly, then it turns out the others are right and I'm wrong. I would double check the lights, myself, because that's when I've seen burning on the leaves like that.

The water source itself is *always* a variable, and for my indoor growing I have found it's much better to simply filter it or use rainwater. I'm on a very deep well but it's got so much stuff in it that RO/DI was the better option. I still use the "waste" water for watering, because it's still more filtered than what went in. I just don't use it on indoor crops, they seem to be too sensitive to stuff like that.

 

[IndicaFarms]

Great info guys I can't thank you enough for the responses. I have always been reluctant to post anything questions or comments but I am glad I did. I recently raised the lights and purchased some Cal/Mag by Botnicare which has Magnesium, calcium, and Iron. I am going to hold off on adding anything until I flush. Then I will reduce the amount of ferts I am using to count out nute burn and see if having backed the lights off will fix the problem. I would hate to cause more issues by adding Unnecessary nutrients.

As far as root aphids I will have to look into that but not sure how I can confirm I have an issue with them. I will read on, Thanks guys

 

[IndicaFarms]

Well I am beginning to lean towards over-fertilizing even though I am following advanced nutrients feeding schedule. I have checked the root system out by digging some out and checking with a microscope and all I saw was nice white healthy roots so I am relieved there. I am about to flush them tonight although I never mentioned this is only affecting one plant, same strain but not a clone of one another. I will try and get a good overall picture of the one plant and maybe its healthy sister.

 

[Ohmless]

they look fine to me, spare the radiant burns and the left one looks like it might be overwatered. i wouldn't really adjust anything except light distances for a while and just let them ride.

 

[BongToke]

maybe do a soil ph test, I mean it cant hurt

 

[mr.brunch]

i would take care with any hydro nutes used , could be too strong. for soil i would say an all round food is best.
sea-maidens advice is prob the best to look at to start... if there is a chance its lights too close then go with that first. i wouldnt be too keen to add too much of anything if you dont have to, and as its only one plant maybe its just a weak one.
also i wouldnt reccomend flushing with large amounts of water, this is for hydro not soil, and could lead to waterlogged soil/overwatering/mold issues.
good luck!

 

[Bush Dr]

Classic over feeding

Pale inner = over feeding
Pale outer = under feeding

There's a bit of an Mg issue but could be due to lock out

Just feed/water with weak Bio Bizz Root Juice for a week, they should bounce back no problem

 

[IndicaFarms]

They are definitely looking better already from feeding just rain water and backing off the lights. Thanks for the help guys now that I have this plant nailed down I can move the practice on to one of the younger clones that is doing the same thing. Not so much the yellowing/blotchy leaves but they are severely curling up long ways with burnt tips.
I believe it to be the same issue(Over fed with a little mag deficiency) the problem is only affecting the mother and its clone not the other mother and its clones even though they are all the same strain, they are different seeds.
I don't think I am going to continue to clone this particular mother. I am going to weed it out as it doesn't seem to be producing as well, though that is probably my fault.

 

[SeaMaiden]

Whoa.... I've never seen overfeeding cause that. It resembles the pics of broad mites I've seen, though.

 

[IndicaFarms]

I have check for mites, aphids and any other pests in the root system and all of the foliage with a microscope and it didn't reveal any infestation so I don't believe that to be a problem. Thanks for the suggestion though it's best to rule everything out.
The new growth looks better already only a short time after flushing with rain water. I have stopped using the R/O water at least for now.