possible nitrogen def. ... or maybe nute burn?

W

Wodthebod

Active Member
So, my plants are almost 5 weeks old. I started off with a half strength nutrient solution, I use Fox Farm's Grow Big nute solution (picture included). My lil' girls took off like wild fire. At two weeks I changed my reservoir, and when I added the nutes at a 3/4 strength, but I forgot to shake the solution before adding it to the water (you know to mix up the various ingredients). over the next week my plants did not grow at all. They also started developing a few brown spots on the leaves and a few actually started turning yellow. I realized that I had fucked up the nutes about a full week after I changed out my reservoir, so I imediately changed out my solution for a full strength mix this past Sunday. However only 4 of my 9 plants have improved in their condition and the other 5 have seemed to worsen. I am at a loss, please help. Below are the full specs of my operation.

I am growing 3 different strains:
3 Shiva Shanti (I heard that even a retard can grow these hydroponically so I figured what the hell :)
3 White Widow
and 3 California Orange
all 9 plants are in Rockwool cubes with a drip system
the reservoir stays at a constant 70 degrees
room temp is at about 78 - 81 during daytime and 70 - 75 night time
I have 3 4foot flourescent lights running on 18 hours and off 6
I have a fan blowing on the girls all 18 hours of the "day"
my nute solution is curently at 860 ppm
and for the past week I have been foilair feeding them with a 250ppm solution to try and fix the fucked up Nutes of last week(although I now think I may be over feeding them)

This is my grow box!
Picture001.jpg


This is Shiva shanti #1 also my best looking plant
Picture002.jpg


This is Shiva Shanti #2
Picture003.jpg


Shiva Shanti #3
Picture004.jpg


White widow #1 the only decent looking WW that I have atm, I really want to save this one
Picture005.jpg


WW #2 this one and WW #3 have been doing very poorly from the start. Should I ditch them? ... or could they still make decent plants?
Picture006.jpg


WW #3
Picture007.jpg


California Orange #1
Picture008.jpg


CO #2
Picture009.jpg


CO #3
Picture010.jpg


and these are my nutes
Picture011.jpg


Any help would be appreciated, I am only confusing myself by reading around on the forums.

Thanks in advance!
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I highly doubt you're N defficient if you're feeding with full strength nutes, its probably nutrient burn. Its very easy to burn your plants at that stage, dial the nutes back to 1/2 strength and wait for a couple of days to see how they like it. Plants needs vary so that would explain why you are seeing some improve and some worsen.
 
Thanks Dankness. That's kinda what I thought, I changed it out last night as I made this post. I hope they improve!
 
They look overwatered and underfed. You can't expect them all to respond/bounce back at the same rate.
 
Well I think I may have found the problem. I finally got my ph buffer solution in the mail last night and I checked my meter. Fucking meter was off alot, I was trying to set my ph for 5.8 and after I fixed my mater my res was at a 4.3 ph. So, I think it was a combination of a ph problem and nute lockout. However I did back the nutes down to 1/2 strength, fixed my ph and trimmed all the burnt spots off my leaves so that I can look for new damage. Hopefully the problem is fixed. I'll know more later.
 
The leaf curl is not pH related. I'll say it one more time.... you are overwatering. Giving fewer nutes ain't gonna help.
 
ok I'll take your word for it cause I really don't know what the hell I'm doing and you seem to. I reduced my drops timer to 1 time a day from 3 times, and I'll watch them to make sure they don't get to dry. Also I raised my nutes to 3/4 strength and I will also watch over them like babies for the next few days.
Thanks for the help bro.
 
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