Yellow Veins???
- Thread starter Dave017
- Start date
Dave017
Well-Known Member
ya I know we will see like I said I just picked 10 gals of ro water will use it when they need watering next and its all a learning experience right? I mean everyday I learn more and more so i'll figure er out eventually and some tips along the way def wont hurt
Medinugs
Active Member
To me looks like you gotta sulfur or other micro nute imbalance/deficiency due to high ph. Feed straight 6.0-6.3ph RO water with 10% runoff next 2 feedings what I'd do. Mild balanced nute solution 6.4-6.5 ph thereafter for feedings with 2, 6.4-6.5ph clear water feedings between nute feedings. Raise nute strength slowly every third feeding until getting to normal strength nutes keeping ph 6.4-6.5 throughout. Solution and water ph are very important to prevent nute lockout/deficiency/toxicity.
Dave017
Well-Known Member
Alright will do I think I sorta F***** up a little by doing a flush I will try this and see what happens nice thing is I have 2 NYC and 2 Snowryders at different ages so I started to feed them a little earlier than the first 2 that are showing def I am also only going to use RO water on the 2 messed up ones so if the other 2 show no signs of yellowing it's not the well water it's underfeeding.
Dave017
Well-Known Member
Ya that's what I've heard I have a bottle of CalMag will add some in should I use it full strength or not, can u easily over do CalMag? Also would a Epsom Salt Foliar spray do any good maybe even a diluted amount of nutes in a foliar spray maybe even a kelp spray. Thanks for the help!!!
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Medinugs
Active Member
Calmag not easily over done I believe, 2.5ml per gallon every feeding should do. I run soiless promix/coco and a bit of perlite, 5ml calimagic first couple times 7.5ml thereafter every water and feed here but thats soiless, no problems ever. Fellow rl grower friends are amazed. In soil calmag will be held retained some so not as much needed.
Dave017
Well-Known Member
I'm running Pro Mix hp, EWC and Perlite it's called LC's mix # 2 isn't that consider soilless?
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Dave017
Well-Known Member
Well yesterday I applied a foliar spray after reading a ton of info lol it was a mix of bio root, bio weed and calmag 1ml each in 2 liters of water. I woke up this morning and the yellowing was almost completely gone on most leaves 
. Now my only problem is some brown tips and edges with some yellowing on the older leaves. I think its a (K) Potassium problem u can see the affected leaves in pics 5 and 6 in the second set of images on page 1 if anyone could say if this is or isn't a (K) Potassium problem I would much appreciate it. Thanks
. Now my only problem is some brown tips and edges with some yellowing on the older leaves. I think its a (K) Potassium problem u can see the affected leaves in pics 5 and 6 in the second set of images on page 1 if anyone could say if this is or isn't a (K) Potassium problem I would much appreciate it. Thankschurchhaze
Well-Known Member
Did you add the epsom salts? I was also thinking possibly S deficiency (rare, but possible).
Epsom salts are high in S (MgSO4), so if you added that, it's possible that's what fixed it if you also applied that.
That chart you posted said this:
"Most common when pH is too high or excessive calcium is present and available"
Excess Ca++ ions will tend to want to join with SO4-- ions to become CaSO4 ( calcium sulfate, or gypsum), which is very insoluble in water, and this happens more at a high pH.
Try using sulfuric acid (battery acid) for pH down (not from a battery).
Epsom salts are high in S (MgSO4), so if you added that, it's possible that's what fixed it if you also applied that.
That chart you posted said this:
"Most common when pH is too high or excessive calcium is present and available"
Excess Ca++ ions will tend to want to join with SO4-- ions to become CaSO4 ( calcium sulfate, or gypsum), which is very insoluble in water, and this happens more at a high pH.
Try using sulfuric acid (battery acid) for pH down (not from a battery).
Well yesterday I applied a foliar spray after reading a ton of info lol it was a mix of bio root, bio weed and calmag 1ml each in 2 liters of water. I woke up this morning and the yellowing was almost completely gone on most leaves
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churchhaze
Well-Known Member
Excess calcium would also antagonize potassium and magnesium, so it is possible the availability of K is low.
Well yesterday I applied a foliar spray after reading a ton of info lol it was a mix of bio root, bio weed and calmag 1ml each in 2 liters of water. I woke up this morning and the yellowing was almost completely gone on most leaves
churchhaze
Well-Known Member
"Look for yellowing starting from the top, and progressing down, including the veins of the leaves."
http://www.drugs-forum.com/growfaq/1382.htm
Dave017
Well-Known Member
I was going to use Epsom salts but I decided not to I will be using RO water from now on the P.H. is lower than my well water prob 5.8-6.2 I will just use the RO with maybe a 1/2 strength nute solution.
