Plant problems

Hello guys and girls.
I have second grow with Mars Hydro, this time 300w light.
Its happening for second time what i never had before. I have the light as suggested (light distance and on 25% power), but leaves on 1 keep getting this brown spots. Just gave them first time root stimulant and Biogrow after 2 weeks, both in minimal dosage. Ph its somehow in the range.

2 words..
Grow equipment….
Par meter and ph pen
I will also ad that even though leds are a bit more money per foot print than hid’s, it’s better for beginner growers to use hids
( led’s are cheaper in the long haul because unless your running a very large foot print you wont need cooling like hid’s do)
Hids take the guess work out of the par meter, you have a given coverage and make sure its not too hot.
Every grower should know how to grow with any type of lighting..

Billytheluther said:

2 words..
Grow equipment….
Par meter and ph pen
I will also ad that even though leds are a bit more money per foot print than hid’s, it’s better for beginner growers to use hids
( led’s are cheaper in the long haul because unless your running a very large foot print you wont need cooling like hid’s do)
Hids take the guess work out of the par meter, you have a given coverage and make sure its not too hot.
Every grower should know how to grow with any type of lighting..

Click to expand...

I grew before always with Hid/Hps and never had those problems, i guess LED its diff. I grew with "cheaper" LEDs and never had that. This one is 300w for 1x1 meter.
Temps are perfect, 24-26 and humidity is in s9me 50s. If it goes on, i will ad some Calcium as suggested from other user.

Thank you.

full plant picture please

What medium are you using?
What is the distance to the light? Mars Hydro's site is notorious for giving wrong info about light height and strength for the different grow stages.

what nutes did you feed?
what are your temps and RH like? -- edit* you want to raise temps under led mid-low 80's are better. Also this early in the plants life you want higher RH 65%-ish
are those leaves touching the soil?

Biobizz light mix. Light is 30cm away and on 25% procent. I gave

ALPHA.GanjaGuy said:

full plant picture please

What medium are you using?
What is the distance to the light? Mars Hydro's site is notorious for giving wrong info about light height and strength for the different grow stages.

what nutes did you feed?
what are your temps and RH like? -- edit* you want to raise temps under led mid-low 80's are better. Also this early in the plants life you want higher RH 65%-ish
are those leaves touching the soil?

Click to expand...

I use Biobizz Light mix, i transplant them and mix some organic pellets into soil and add mycorrhiza.
Light is 30cm away and dimmed on 25%. I did raise the RH now.
Only this one (Critical) looks like this, the other ones look ok.

dejvi said:

Biobizz light mix. Light is 30cm away and on 25% procent. I gave



I use Biobizz Light mix, i transplant them and mix some organic pellets into soil and add mycorrhiza.
Light is 30cm away and dimmed on 25%. I did raise the RH now.
Only this one (Critical) looks like this, the other ones look ok.

Click to expand...

What are your temps exactly and how are you watering exactly?
That plant looks to be suffering from a case of too much moisture or perhaps infrequent watering. That explains the twisting and immobilized nutrients showing up as spots/yellowing.
Temps can also play a roll as well with particularly with led, which is why I ask. Want to keep the roots happy and nutrients mobile.

its on the first set of leaves, i get that with my super soil grow, it's on the first set of leaves and has sorted itself out by the looks ov it. dont worry about it unless it spreads

Temps were a bit cool in first 2 weeks, around 23-24 when on and 18-19 when off. Not i have them 25-26 when on. Humidity was in the lower side 50ish and i water them every 3 or 4 days now in final pots and smaller amounts. I tend to keep then in dryer side, since it's better as to over water them.
Thing is, i never had problems with HPS or with first LED, Viparspectra V900.

Thank you all.

soil and ph is very forgiving, as long as your not way out, it shouldent be a problem.
soil isnt allways a perfectly even mixture of its constituants, you get concentrated patches of stuff in the soil that usualy wouldent be a problem, that could be the problem you had

I'm with @go go kid on this one. I don't see anything worth worrying about. Keep everything the way it is and see how they go. It's not unusual for the first few sets to have a bit of discolouration.

Killaki said:

What are your temps exactly and how are you watering exactly?
That plant looks to be suffering from a case of too much moisture or perhaps infrequent watering. That explains the twisting and immobilized nutrients showing up as spots/yellowing.
Temps can also play a roll as well with particularly with led, which is why I ask. Want to keep the roots happy and nutrients mobile.

Click to expand...

I'm learning that overwatering is my biggest problem. Whatever the PH of the water is, too much of It will cause nutrient deficiency because the plant can't take anything in. Being a newbie, I dumped all kinds of crap on it like triphosphate, tiger bloom, calmag and whatever. The plant will never take in any of these things if it's drowning. Yellow leaves and brown spots turn into burnt dead leaf tips and eventually the plant stops growing. Overwatering, very common mistake and the symptoms look like a lot of other problems. Lift the pot. If it's way too heavy you have overwatered. Let the plant dry out a few days and it should bounce back if you didn't kill it. I'm growing Auto's so proper watering is a big deal. It's not easy.
Probably not in your case but always check your plants for pests like spider mites. I found out the hard way. In the week or two that I was playing with ph. pens and CalMag the mites spread to two more plants. Yellowing leaves can mean a lot of things. I diagnose plant problems in this order from now on. First, simple over/under watering. Next I check for pests. With those two causes eliminated I'll figure out if I have nutrient problems.

if you have scales that will weigh the pot, weigh it dry, then weigh it wet, then you get to know how much to water them
if your over watering them, what do you do with run off?, you should keep it to add next watering, or your just washing nutes out of the soil. that can give you all kinds of problems.
when watering, just add small amounts of water at a time, let the soil soak it up, then add a little more, do this untill you get a tiny amount of run off. job done

go go kid said:

if you have scales that will weigh the pot, weigh it dry, then weigh it wet, then you get to know how much to water them
if your over watering them, what do you do with run off?, you should keep it to add next watering, or your just washing nutes out of the soil. that can give you all kinds of problems.
when watering, just add small amounts of water at a time, let the soil soak it up, then add a little more, do this untill you get a tiny amount of run off. job done

Click to expand...

This round I screened the soil after wetting it down. I moistened the soil and filled all the pots like I used to. I had the screen and wheelbarrow already there so I dumped out all the pots onto the screen. To my surprise there were still clumps of wet and dry patches. After screening the soil again I'm confident that it evenly moist and that I solved one of my biggest problems. If I can just stop overwatering, I'd be so much better off.

It's like making sponge cake. No clumps!