New grower here and one of my plants has some dark spots (Any advice?) Pic included

It's almost two weeks old and I have it under CFL's about 8" I water once per day, and today I went to check on it and it now has some dark spot. I have not given it any nutrients at all yet. just distilled water.
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mcpurple

Well-Known Member
it shouldnt need water every day unless it is completely dry. and it is really small for 2 weeks
 

monkeybones

Well-Known Member
I'm not overly savvy on micronutrient deficiencies but your plant likely has one. At this early stage of its growth fertilizers, especially inorganic ones, are a dicey game so I would suggest something light on the roots and loaded with vitamins and micronutrients like superthrive. Add a drop of superthrive to every litre of a sprout's water and, if it's getting enough light and the proper amount of water, you'll notice more healthy growth. But it is still young, so if you have no access to micronutrient supplements, just give it some time to kick back and get through its awkward stage and you may see some improvement on its own. Cannabis has a happy habit of making do with what it has.
 

mcpurple

Well-Known Member
a plant that small really doesnt need nutes, i dont start nutes till week 2 from seed and my plants are already on the 3-4 set of leafs. its not nutes. its most likely being watered to much like he said every day and i know that plant is not using allthat water every day. it could also be a ph problem or the soil is bad and compacted
 
First of all, Thanks you all for your ideas and help it's greatly appreciated. The PH from start has been around 6.5, the soil is just standard potting soil from Lowe's, When it is time to transplant it I was going to get better soil, I finally found a local place that stocks Fox Farms products.

So I'm guessing at this point maybe try to lower the PH to around 6 to 5.8 and water less frequently?
 

mcpurple

Well-Known Member
your ph is fine, and water only when the pot is light and feels dry, i dont think it is drying out every day, but if it is then water it like you were and only enought to have a small amount of runoff
 

Dinosaur Bone

Active Member
Superthrive may help. If you can find Worm Shit [worm castings] that might help too. Just put a good handful in there, lightly pack it and water it in.
 
Thanks again, I got some Superthrive today but I'll wait till tomorrow or so to use it so I don't have to water again. I watched a couple of videos on Youtube and it does look like I might have been overwatering it, everything I saw the soil was much dryer when it was watered.
 

mcpurple

Well-Known Member
use only half of what the bottle of super thrive says to use mabye even a 1/4 of what it says alot of people harm theri plants more then do good with the stuff. i only use it to help root cuttings and thats it and i use about a half a drop of it per gallon
 
Thanks mcpurple, I will use very little, I was looking at my soil, that cheap crap they sell at Lowes that I got. looking at other soils online and here (pic's) that may be the problem mine looks like mulch with some Styrofoam and a little dirt in it. I was going to order some Fox Farm soil until I found some local and thought about using it when they need to be repotted, can I do that now or would it be to much for the little thing? I also have just read that when I transplant it to use the same soil but is there some way I can switch with out shocking it to much? thanks again.


use only half of what the bottle of super thrive says to use mabye even a 1/4 of what it says alot of people harm theri plants more then do good with the stuff. i only use it to help root cuttings and thats it and i use about a half a drop of it per gallon
 

Dinosaur Bone

Active Member
The Styrofoam looking bits are hopefully, and most likely Perlite. If you squeeze it between your thumb and forefinger, it should into dust and sand like grit.

Perlite is good old fashioned Silica Dioxide. Sand that has been baked in a really hot oven, until it puffs up like popcorn.
 
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