HELP! HYDRO!!!!look is this calcium deficiency? maybe? i think - GreenPassion.org - Dedicated to Medicinal Cannabis Cultivation and Education

purplehaze4u · #1 (**permalink**) 07-14-2009, 10:16 PM

ok so i thinking it is calcium and i know when i was dirt baggin lol i added lime so how do we remedy this in hydro ph is 5.8 5.9 steady 1000ppm foxfarm system is aeroponics hybrid these plants are mexican sativa in 71/2 weeks flowering humidity is around 58% air temp around 76 lights are hid hps 1000w on 12/12 so wadda ya think
and this was just in the last week and a half

jangel · #2 (**permalink**) 07-14-2009, 10:31 PM

I have added to your title and I am sure you will now get the hydro gurus in here to give you a hand. I am a dirt bagger so can't help you, but hold on they will come riding in shortly!

Peace

purplehaze4u · #3 (**permalink**) 07-14-2009, 10:34 PM

hey thanks and anytime with the help i am kind bad with that stuff lol thanks again sweet heart

jangel · #4 (**permalink**) 07-14-2009, 10:36 PM

No worries and no problem! Hope they give you what you need...good luck, your poor plants look sad...

Peace

tokecrazy · #5 (**permalink**) 07-14-2009, 11:11 PM

Hey Purplehaze4u, When was the last time you calibrated your pen or meter? pH Fluctuation:
Both of these leaves in figure 6 and figure 7 are from the same plant. It could be over fertilization, but more likely it is due to the pH being off. Too high or too low a pH can lock up nutrients in the form of undisolvable salts and compounds, some of which are actually toxic to the plants. What then happens is the grower then tries to supplement the plants diet by adding more fertilizers, throwing off the pH even more and locking up even more nutrients. This type of problem is seen more often in soil mixes, where inconsistent mixing of the medium's components leads to "hot" spots.

Figure 6 (left) and Figure 7 (right)
That's the first thing I would do, before anything else. Peace

tokecrazy · #6 (**permalink**) 07-14-2009, 11:12 PM

Oh one more queston when was the last Plain PH water flush? Peace

Explosive · #7 (**permalink**) 07-14-2009, 11:21 PM

It's called (sucking all 'every last bit of nutrition') out from wherever it can find it..usually in your final flush just using ph adjusted RO or Distilled adding 2TBLS or Unsulphered Organic Molasses with a ph of 6-6.4 will prevent this and give your buds that alst shot or carbs to fatten up..Big Time.......I tend to not use any nutes the last 2 weeks,ph 6.4 adjusted....just molasses and RO water for the best results............

deep[H2O]culture · #8 (**permalink**) 07-14-2009, 11:23 PM

nute lock up, you gotta fix your pH...

edit, nevermind. looks like your ph is being monitored. Thats what my plants looked like one time but it was because my PH meter broke and i did not have one for 2 weeks. but once i got one and fixed my ph, it went away almost immediately. so i dont know man, got me. it could be a few deffencies. try to find a chart online somewhere... i have seen some usefull ones...

purplehaze4u · #9 (**permalink**) 07-14-2009, 11:34 PM

yea i looked at many charts and i dont think i would ever take my ph up to 6.4 in hydro

purplehaze4u · #10 (**permalink**) 07-14-2009, 11:38 PM

osorry wrong button and i would run my oh up that high and then new ph pen i have is only about 3 or 4 weeks old and it was a 150 dollar water proof one cause my buddy kept dropping it in the rez and i looked at a lot of charts and it seems to be calcium but not sure and i was wondering if anyone had seen this on thier plants this is my first at aeroponics second in hydro first was dirt could use the help

tokecrazy · #11 (**permalink**) 07-15-2009, 12:48 AM

It's a nutr lock up.If it's not your PH pen out of calibration you have a salt build up and it has lock out the nutr form uptaking what they need.The plant will take what it wants and there's not much you can do about that.Flush them out from the top of the menduim.I have a 18 gal res and a 18 gallon barrel.I have four plants in the cab most of the time,I run about 4-1/2 gallons throught the top of the menduim for each plant.I use a pump in the barrel on a switch to turn it on and off.I do use flora kleen in the flush water.After it's all in the res I kick on the res pump and flood the tray.I run the flora kleem for 24 hours and change it out to my nutr again.Rule #1 WHEN IN DOUBT FLUSH THEM OUT. Peace

purplehaze4u · #12 (**permalink**) 07-15-2009, 08:35 PM

hey toke and deep the ph meter is a new one that was just calibrated not to long ago and toke if you look at the pics they are not the same as you posted here because i looked at the same ones if you look lower you will notice that the are very similiar to the calcium def.. and when i was a dirt bagger we added lime to the mix this is hydro so i wanted to know what other users did for a calcium def thanks

tokecrazy · #13 (**permalink**) 07-15-2009, 09:51 PM

If you are wanting to add calcium, get botanicare cal-mag plus.When was thew last time they were flushed out?The salts build ups cause all kind of problems.Flush them out and add cal-mag to the mix. Peace

purplehaze4u · #14 (**permalink**) 07-16-2009, 12:09 AM

thanks toke

alldayeducation · #15 (**permalink**) 07-16-2009, 12:33 AM

what toke said

purplehaze4u · #16 (**permalink**) 07-16-2009, 12:44 AM

they were flushed a couple of weeks ago and this prgressed rapidly thanks again

tokecrazy · #17 (**permalink**) 07-16-2009, 11:57 AM

Hey If you cant find the cal-mag get some epsom salt and use one tsp per gal of water or nutr mix.It does the same as cal-mag but doesnt have any magnesium in it.Hydro will do it fast, erther good or bad it happens faster then soil that's for sure. Peace

OG KUSHMAN · #18 (**permalink**) 07-16-2009, 03:04 PM

It looks more like a ph problem to me. When you over feed it burns the edges of the leaves first then the rest goes too.. If your running Hydro your ph should be between 5.2 and 5.8 Did you have just one or two fingers of the leaves affected at first? Thats how ph problems usually start. Try cannaversity.com they have a lot of pictures to compare your leaves with. Good Luck!

purplehaze4u · #19 (**permalink**) 07-20-2009, 07:18 PM

thanks og but it starts out as dots kind of all over the leaf then it progresses very small dots going to do another flush here soon thanks

purplehaze4u · #20 (**permalink**) 07-24-2009, 09:34 PM

ok so i recalibrated the ph meter once again checked nutes in water prior to recalibrating and everything came out the same 5.8 hmm so anyway here are some more pics of how the spots start all over the leaf now it is not all over all of the plants only about 8 or 9 of them and these plants are at maximum height for the room at 4' so and we are now entering week 10 tomorrow the trichomes are still clear and these are still sativa the indicas look fine and have no spots on them. and thanks once again to everyone