Experienced growers what is going on with these plants?

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tybolton

Member
Hi, Can someone please help me figure out what's going on with my plants. On June 14 I germinated 9 autoflower seeds. 3 gorilla glue, 3 Haze XL, and 3 Critical Purple. They all germinated in two days and went into 1-gallon pots filled with a mixture of Ocean Forest, Happy Frog, and Perlite, on June 16. The plants went into my veg tent under 2 Viparspectra 1000 watt LED (230 actual watts) with the blue lights on and a little red.

The lights were hung around 26 inches and I slowly lowered them. A few days ago, I noticed the tips of one of the gorilla glue and one of the Haze XL were starting to brown. I thought maybe the light was too close so I moved it back up. It was probably 14-16 inches off the canopy. I haven't fed anything cause I thought the soil could get me to 4 weeks. They only thing I've been giving them is RO water and that's every 3-4 days.

I'm thinking they could be needing something because it's getting close to 4 weeks. Tent temps are usually around 76 degrees and RH around 65%. None of the Critical Purple show any deficiencies. It's two of the gorilla glue and one of the Haze XL. Could it be heat stress or is it time to feed them? What organic feed do you recommend? Thanks in advance...
 

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oill

Well-Known Member
tybolton said:
Hi, Can someone please help me figure out what's going on with my plants. On June 14 I germinated 9 autoflower seeds. 3 gorilla glue, 3 Haze XL, and 3 Critical Purple. They all germinated in two days and went into 1-gallon pots filled with a mixture of Ocean Forest, Happy Frog, and Perlite, on June 16. The plants went into my veg tent under 2 Viparspectra 1000 watt LED (230 actual watts) with the blue lights on and a little red.

The lights were hung around 26 inches and I slowly lowered them. A few days ago, I noticed the tips of one of the gorilla glue and one of the Haze XL were starting to brown. I thought maybe the light was too close so I moved it back up. It was probably 14-16 inches off the canopy. I haven't fed anything cause I thought the soil could get me to 4 weeks. They only thing I've been giving them is RO water and that's every 3-4 days.

I'm thinking they could be needing something because it's getting close to 4 weeks. Tent temps are usually around 76 degrees and RH around 65%. None of the Critical Purple show any deficiencies. It's two of the gorilla glue and one of the Haze XL. Could it be heat stress or is it time to feed them? What organic feed do you recommend? Thanks in advance...
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I'm guessing you haven't added any nutrients yet?

It looks like nutrient burn to me ... can you show the tops of the plants and pics of the whole plant together as opposed to zoomed in on a specific part?

If you have burned tips at the top of the plant then the soil is to rich and i would do some heavy watering to wash some of that away.
 
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oill

Well-Known Member
just seen.... why are you using ro water with soil?

Tapwater has calcium and magnesium in it and they need that.

Ro water is for hydro typically
 
T

tybolton

Member
oill said:
I'm guessing you haven't added any nutrients yet?

It looks like nutrient burn to me ... can you show the tops of the plants and pics of the whole plant together as opposed to zoomed in on a specific part?

If you have burned tips at the top of the plant then the soil is to rich and i would do some heavy watering to wash some of that away.
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Hi, No nutes thus far and the tops of the plants are perfect. I usually water with RO the first few weeks cause my tap water is awful. Coming out of the tap it has a pH of 9.3 - 9.9 and very hard. The kind of water that leaves calcium and lime build-up on pipes and faucets. I'm going to switch to half RO and half tap. What do you recommend? I have some cal-mag and Trident's Pride Organic Liquid Fish Fertilizer. I'll post some more pics of the whole plant.
 
O

oill

Well-Known Member
tybolton said:
Hi, No nutes thus far and the tops of the plants are perfect. I usually water with RO the first few weeks cause my tap water is awful. Coming out of the tap it has a pH of 9.3 - 9.9 and very hard. The kind of water that leaves calcium and lime build-up on pipes and faucets. I'm going to switch to half RO and half tap. What do you recommend? I have some cal-mag and Trident's Pride Organic Liquid Fish Fertilizer. I'll post some more pics of the whole plant.
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OK.... im thinking a ph issue.. that soil should have plenty of everything.

Whats your ph
 
T

tybolton

Member
oill said:
OK.... im thinking a ph issue.. that soil should have plenty of everything.

Whats your ph
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Hi, the pH comes out of the bottle at 6.5. I've attached some more pics for you. It looks like some kind of burn, but as I said, I haven't given them anything. It's day 26 in FFOF and FFHF. I hadn't fed them cause everything was a nice green with no yellowing. Thanks...
 

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Leon1111

Active Member
I would drop the pH at 6.2. if too alcaline your plant can't absord everything. Also if you keep the lights close the deficiency goes faster. But they look good. They will recover.
 
T

tybolton

Member
I appreciate that Leon. This is my second grow, and I'm trying not to make the same mistakes. Can you recommend an organic fertilizer? I made the mistake of giving them synthetic nutes the first grow and screwed up my soil. I have some fish fertilizer 2-3-1
 
T

tybolton

Member
Leon1111 said:
I would drop the pH at 6.2. if too alcaline your plant can't absord everything. Also if you keep the lights close the deficiency goes faster. But they look good. They will recover.
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I forgot to add that there's 9 plants and three strains. Gorilla Glue, Haze XL, and Critical Purple. Six of the plants are fine and the problem ones are two Haze and one Glue. That's why I was thinking maybe the lights.
 
polishpollack

polishpollack

Well-Known Member
some strains might a problem with those soils when the plant is young. remember to let the soil dry out quite a bit before you water as you don't want to keep the soil saturated all the time. don't feed anything as there's fert in those soils. don't have the light too close or you get heat damage. let it grow some more and transplant into a much larger container full of that soil. you don't need to add much else.
 
T

tybolton

Member
polishpollack said:
some strains might a problem with those soils when the plant is young. remember to let the soil dry out quite a bit before you water as you don't want to keep the soil saturated all the time. don't feed anything as there's fert in those soils. don't have the light too close or you get heat damage. let it grow some more and transplant into a much larger container full of that soil. you don't need to add much else.
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Thanks for those nuggets. I put those autos in the one-gallon cause I'm trying to learn how to keep the plants short with one large cola in a SOG. I probably should have done that with photos but I had these auto seeds leftover and wanted to see how they'd grow in the one gallon. Can you transplant autos without stressing them? I'd like to put a Critical Purple and one of the Haze XL in a three-gallon fabric pot.
 
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