Ice Bomb leaves yellowing/browning - Please help!

[RedEyeJedi01]

As the title suggests, I'm having an issue with one plant, Ice Bomb. I'll just jump into it

1) Pictures are attached, both with lights on and off and taken minutes ago.
2) Growing indoors with seven other plants. 6 autos and two photo periods. All feminized
3)Using full line of Earth Juice with hygrozyme and hi-brix, watering schedule right now is feed one week, water the other basically. Orca Liquid Mycorhizzae and cal-mag (used once at 2ml/gallon when issues showed up)
4) Fox Farm Ocean Forest, Ice bomb is in a 5gal oxypot with Earth and Grow probes inserted
5) She just turn two weeks today from sprout
6) I did FIM both my photo period plants, of which Ice Bomb is included, but I believe the browning started prior to that
7) Using a 1200watt LED grow light, currently 24" from canopy and maintaining 74-80 at canopy level
8) Have two naturally-producing C02 bags in the tent, several fans, two exhausts and humidifier that keeps it about 65-70% RH and digital environmental controller
9) Soil PH is currently about 6.8-7
10) I have used Dutchmaster liquid light and saturator at a very weak mix at about week 1, but haven't since. Issue did appear shortly after, but seems like it's spreading from bottom up.



Uhhh, if I missed anything, please ask! Please help!!

 

[BuddroGreen]

I read all the time about Fox Farms soil being hot (I'm hydro, not soil..just FYI)...meaning there is nutrient already in the soil, if you added more nutrient it looks like nute burn, and with the bennies in the mix to break down the elements and get them to the roots faster is most likely your problem...back off the nutrients and see if she stops burning.

 

[ShiggityFlip]

I agree Buddrogreen,with FFOS you shouldnt need nutes until you are almost flowering. A good flush with ever gallons may take the crew nutes out of the soil.

 

[RedEyeJedi01]

I read all the time about Fox Farms soil being hot (I'm hydro, not soil..just FYI)...meaning there is nutrient already in the soil, if you added more nutrient it looks like nute burn, and with the bennies in the mix to break down the elements and get them to the roots faster is most likely your problem...back off the nutrients and see if she stops burning.

Shoot, ok, I'll give that a try. I've only fed her once with a very weak solution and only fed her half a gallon of that solution, too. She was just watered (only water) a few days ago, so lets hope that clears things up. Cheers, guys! I knew FFOF was hot, but this is my first run with organic nutes and I was under the impression that it's difficult to overfeed with organics, but perhaps I was misinformed.

 

[ShiggityFlip]

It is a common misconception about organics. What they mean is that minerals and organics in the soil are broken down slowly through action of microbes and made available at a constant rate. So if your soil is not hot enough to hurt a seedling it should be okay over the long haul. If we made a soil that had crap tons of bat guano it would kill a plant straight away.


Liquid organic nutrients are great, but they are more similar in action to conventional nutes. They are already digested microbially so highly available and very capable of burning the living heck out of a plant. That doesn't mean they are bad. They are great. If they were t available it would take months for them to become so. Your grow would be over by the time they were available.

 

[Freezy]

I have personally had issues with FFOF. It does run a bit hot I would not add any more nutes for a while. I just picked up some clones that are in FFOF and they are a bit over two weeks old. They have still not had any nutes added and even those are showing a tiny bit of nute burn. I will say that FFOF works well after the first couple weeks and Ive heard most people have greater success with it when they mix it with other soils. Just my 2 cents, I'm still learning too so take it as a grain of salt.

 

[RedEyeJedi01]

Update in my garden: It does seem that the issue with Ice Bomb have abated, but now I've run into something new. In this current grow, I have my two photoperiod plants in 5 gal pots and six autos in 2 gal. Last night, I noticed a browning spot on one of the autos (Northern Lights X Big Bud), but it was also at that moment that I noticed small bugs in my two large pots. I assumed all the pots were infested, so I did a root drench with two gallons across all eight with a mixture of GoGnats and SM90 (3ml per gallon) and then did a Foliar spray with sm90 on all plants last night. I went to check them this morning and while I'm not seeing any bug activity currently, I did notice that the browning on the plants got worse and spread to a couple other plants.

They've mostly been getting water, think I've fed them once and watered 3-5 times.

My question, does this damage look bug-related, SM90-related (it did get worse post-spray/drench) or does it actually look nutrient-related? Please helppp! Cheers in advance! Pictures are of the 3-4 autos that seem to be afflicted (also some very slight damage to my Berry Bomb photoperiod lady)