Burn tips, first grow need help

[AnxiousEnt]

First of all I want to thank any one who decides to take the time to help me. This is my first medicinal grow and feel a bit overwhelmed by this.

I'm growing in a 4x2 tent, 3 gallon fabric pots. I'm using Fox Farm Ocean Forest as my medium (with some perlite). So far I have only fed tap water (I let it sit for 24-48 hours before using) as my roommate has grown before on this same building (which made me assume it would be fine if I used the same water).

Temperatures stay at around mid-high 70's, RH stays at about 55-75%. I'm using one 300W Mars Hydro (at around 18 inches from the canopy).

From what I have read this could be nut burn or some sort of deficiency. I have no idea what could be the problem or how to go about fixing it. Any advice is greatly appreciated, I leave the country in a week (for 10 days) and I'm afraid that if I don't do something to correct this now my girls will be goners when I come back home :[ )

 

[mmjmon]

The drops on the leaves could be the problem here...

First of all I want to thank any one who decides to take the time to help me. This is my first medicinal grow and feel a bit overwhelmed by this.

I'm growing in a 4x2 tent, 3 gallon fabric pots. I'm using Fox Farm Ocean Forest as my medium (with some perlite). So far I have only fed tap water (I let it sit for 24-48 hours before using) as my roommate has grown before on this same building (which made me assume it would be fine if I used the same water).

Temperatures stay at around mid-high 70's, RH stays at about 55-75%. I'm using one 300W Mars Hydro (at around 18 inches from the canopy).

From what I have read this could be nut burn or some sort of deficiency. I have no idea what could be the problem or how to go about fixing it. Any advice is greatly appreciated, I leave the country in a week (for 10 days) and I'm afraid that if I don't do something to correct this now my girls will be goners when I come back home :[ )

 

[Bernie420]

So far I have only fed tap water

Add some grow nutes, some humic acid, some microbes, some kelp to that

 

[AnxiousEnt]

The drops on the leaves could be the problem here...

I took the picture a moment after I watered their pots earlier today >-<

 

[herbfanatic]

They don't look more than a few weeks old and the FFOF should have plenty of nutes at this point in the game... Might it be an overwatering/high humidity issue (75% RH is high, might not allow for soil to dry as easily if overwatered)? That soil looks mighty wet. Do you use the first nuckle/container weight method for knowing when to water?

 

[macsnax]

Looks like an over watered plant. When you have a little plant in too big of a pot, it's easy to do. There's too much water for the lil guy to drink up before the grower wants to water again. Let it dry some between waterings.

 

[Bernie420]

They don't look more than a few weeks old and the FFOF should have plenty of nutes at this point in the game... Might it be an overwatering/high humidity issue (75% RH is high, might not allow for soil to dry as easily if overwatered)? That soil looks mighty wet. Do you use the first nuckle/container weight method for knowing when to water?

That would be fine if it had some roots to get it. Right now we need to get the nutes on the roots.

 

[herbfanatic]

That would be fine if it had some roots to get it. Right now we need to get the nutes on the roots.

Plenty of nutes in that soil (FFOF, known for being "hot" with nutes). If the plant was a month and a half to two months old I imagine you would need to start supplementing since most of the stuff has either been used by the plant or flushed out during waterings. I'm no expert but I personally think adding more nutrients right now will do more harm than good.

 

[AnxiousEnt]

They don't look more than a few weeks old and the FFOF should have plenty of nutes at this point in the game... Might it be an overwatering/high humidity issue (75% RH is high, might not allow for soil to dry as easily if overwatered)? That soil looks mighty wet. Do you use the first nuckle/container weight method for knowing when to water?

These plants are 5 weeks old (I most likely stunted the growth 1 week by having the light too far away before getting to the proper distance). I let the upper layer of the soil get dry (1-2 centimeters) before watering, I took this picture right after I watered them earlier today.

 

[AnxiousEnt]

Looks like an over watered plant. When you have a little plant in too big of a pot, it's easy to do. There's too much water for the lil guy to drink up before the grower wants to water again. Let it dry some between waterings.

I took the pictures right after I watered them. I have always waited for the upper layer of soil to completely dry before watering.

 

[pulpoinspace]

let it dry more. wait for all the soil to dry not just the top layer. judge by weight. water when the pot weighs almost nothing.

 

[Bernie420]

Plenty of nutes in that soil (FFOF, known for being "hot" with nutes). If the plant was a month and a half to two months old I imagine you would need to start supplementing since most of the stuff has either been used by the plant or flushed out during waterings. I'm no expert but I personally think adding more nutrients right now will do more harm than good.

Right theres plenty of nutes in that soil for it later on right now the plant is hungry has no roots hardly and it wants you to feed them something and not just rinse some tap water over it.

 

[Bernie420]

I took the pictures right after I watered them. I have always waited for the upper layer of soil to completely dry before watering.

Im going to stand by my first post your plants are obviously starving.

 

[herbfanatic]

Right theres plenty of nutes in that soil for it later on right now the plant is hungry has no roots hardly and it wants you to feed them something and not just rinse some tap water over it.

Agree to disagree brother Bernie

 

[curious2garden]

Im going to stand by my first post your plants are obviously starving.

If they were in a coco or other soilless substrate I'd agree but in this case they look more like burning and since the ferts release on watering in soil my take is he is overwatering them. OP let them dry out.

 

[Bernie420]

Agree to disagree brother Bernie

 

[Bernie420]

If they were in a coco or other soilless substrate I'd agree but in this case they look more like burning and since the ferts release on watering in soil my take is he is overwatering them. OP let them dry out.

Ferts release on watering ??/ never heard that. I heard that microbes break down the soil into elements that the plant can easily uptake. Since so small and likely not to have a robust microbe population on the roots looks like its starving and could use some nutrients that are readily available to be absorbed by the roots.

 

[macsnax]

I took the pictures right after I watered them. I have always waited for the upper layer of soil to completely dry before watering.

1-2cm of dry soil on top is not dry enough to water again. More like 50+ cm down needs to be dry. Pick your pot up when it's wet, remember how heavy it feels. Then let it dry out considerably more than you have been, once you learn the difference between a dry pot and a wet pot, you judge when to water by picking up the pot and judging by weight.
Also it's not a good idea to leave water droplets on the leaves when lights are on, you can burn a plant pretty bad.

 

[cannabineer]

Ferts release on watering ??/ never heard that. I heard that microbes break down the soil into elements that the plant can easily uptake. Since so small and likely not to have a robust microbe population on the roots looks like its starving and could use some nutrients that are readily available to be absorbed by the roots.

A dry soil is stable. Wet it, and the microherd that is present will act on the castings, guano and other nutrient sources. You seem to be saying that only the symbiotes (such as mycorrhizae) and commensals with the plant's root system do this exclusively. To the best of my knowledge, that is not so. Potting soil is a living thing, and when one wets it the microbes go to town. Overwetting will lead to faster nutrient release and possibly anaerobic pockets which will develop an unhealthy population of bacteria etc. So I concur with the advice to suspend watering these sodden youngsters.

 

[Bernie420]

So far I have only fed tap water


Add some grow nutes, some humic acid, some microbes, some kelp to that

and splash a little around the base of the plant, dont need to feed a whole pot that doesnt have roots in it.