This will be my first auto grow dwc...

[Civicsi06]

what water are you using? tap? well? other? what is the ppm of just your water,, no nutes?

those ppms are too high IMO. for seedlings like that, i keep my EC around 0.2 to 0.3 (100 to 150 ppm depending on brand of meter).

I am using straight tap water. The ppm's on the tap water read 199.

I just flushed half the water in my bucket and now the pH is at 5.8 and ppm at 300. I think where I messed up was 2 things. 1. The LED light I used was just to strong for the small plant, The LED is 300w sitting around 27" from plant. I switched to a small 12w LED light sitting about 8" from plant. Hopefully that will help with the light burn. 2. I did not go by the seedling amounts on the back of the nute bottle. So I believe I added twice the amount at the end than I should have. So if the nute bottle recommends at seedling stage 1/2 tsp per gallon, then I should have only added 1.25ml of nutes, that would be 1/8th of the recommended dosage I think.

 

[Civicsi06]

I ran my ph at 5.9 and early veg stage around 350 ppm. My plant done fine as you can see from pics.i up the veg blooms by about a 100ppm more every week for 4 weeks.total on 4th week was around 650ppm.
Remember all plants are different.
I know people that put there ppm upto 1000ppm in veg just because that was what the plant wanted.
Half a table spoon is around 2.5ml right.
2.5 ml divided by just over 4 litres equals to only around .6 ml per litre.
I don't think this is enough.
I used 1ml of veg per litre and also fed rootmass over the rockwool.
Put the calmag in as soon as possible if it is that then the problem will rectify its self quite quickly as long as you don't leave it too long.
If its a feed deficiency then add nutes.
Just keep a close eye on things as you make changes as I said as soon as you notice a difference just solve it by researching leaf problems online to mach these problems.
The reason I said it could be either 2 of the things I mentioned is that the signs in the leaves are very similar.
Watch the serated tips if they go light brown then its nite burn(outside of leafs are affected first)
If its yellowing of leafs inside out then that's more than likely calcium difficiency (use calmag).

Excellent write up! I will keep an eye on things for now and then tomorrow I snap another pic and post. If you think I need to add the calmag please let me know. Thanks for all your help!

 

[auto1dwc]

By the way my veg nutes told my to use 3 to 4 ml per litre, so I quarter it.
This way you can up the ppm steadily over the coming weeks.

 

[Civicsi06]

By the way my veg nutes told my to use 3 to 4 ml per litre, so I quarter it.
This way you can up the ppm steadily over the coming weeks.

How often do you perform a complete flush?

 

[auto1dwc]

Excellent write up! I will keep an eye on things for now and then tomorrow I snap another pic and post. If you think I need to add the calmag please let me know. Thanks for all your help!

No problem..here to help just like many others lol.
Keep me posted and rollitup members will get it for u.

 

[Civicsi06]

I am looking at the calmag now and the instructions say to put 2ml per gallon for seedlings. Should I use this amount?

 

[auto1dwc]

How often do you perform a complete flush?

Every two weeks I did it.just 24h of pure phd water.then at the end just put your nutes in and stir.wait another 13 days change your water to plain phd water again,give it 24hr than add nutes again just remember to add more nutes every fortnite if needed.
1st week 1/4 dosage
3rd week 1/2 dosage
4-5 week full dose if needed.
If your plants need it give it them.if it looks healthy enough on week 4-5 3/4 would be fine.
Some people think you have to max out the recommended dosage,but that's not the case with dwc.
U will learn as there is a lot to take in.
Once you've got it you cant go wrong.
Seriously.

 

[auto1dwc]

I am looking at the calmag now and the instructions say to put 2ml per gallon for seedlings. Should I use this amount?

That does seem right....my calmag says 1-2ml per litre.
What brand is it.
I meant that doesn't seem right.

 

[Civicsi06]

That does seem right....my calmag says 1-2ml per litre.
What brand is it.
I meant that doesn't seem right.

Botanicare Cal Mag Plus

 

[auto1dwc]

Botanicare Cal Mag Plus

So u probably don't need as much as my calmag as yours is a plus brand so it is more concentrated. Stick with ratio on bottle.

 

[Civicsi06]

So u probably don't need as much as my calmag as yours is a plus brand so it is more concentrated. Stick with ratio on bottle.

I am going to add in 8ml of cal mag then since I have just over 4 gallons of water. Hopefully this will help!

 

[auto1dwc]

I am going to add in 8ml of cal mag then since I have just over 4 gallons of water. Hopefully this will help!

 

[rkymtnman]

I am using straight tap water. The ppm's on the tap water read 199.

if you can, i'd switch over to RO/distilled water. it will make your life a lot easier. anything over 0.2EC (yours is 0.4) is hard water.

just my 2 cents.

i buy mine at walmart in the 5 gal jugs. kind of a pain but at least i know my water is not a problem.

 

[Civicsi06]

I think my plant is doing better now that I added the calmag and switched to a less powered led light for the time being until the plant grows more for the 300w led light.

Before calmag and light change:

After one day of using calmag and light change:

 

[auto1dwc]

I think my plant is doing better now that I added the calmag and switched to a less powered led light for the time being until the plant grows more for the 300w led light.

Before calmag and light change:View attachment 3896810

After one day of using calmag and light change:View attachment 3896811

All good now,just abit more to go with getting leaves a nice constant green.
And acting quickly done the job.
But that's the benifit of dwc.
Well done pal

 

[auto1dwc]

All good now,just abit more to go with getting leaves a nice constant green.
And acting quickly done the job.
But that's the benifit of dwc.
Well done pal

Put the 300w back about 20in from plant.
I used a 300w led all the way through.
Here's some of the results.

 

[auto1dwc]

This is 2oz, got more to chop and a popcorn bucket full off looser nuts.
Should hit around 5 oz from 2 autos but 1 plant grew shit cus off lack off light being drowned out by the other one.
Overall I'm happy with that.

 

[rkymtnman]

Put the 300w back about 20in from plant.

agreed.

 

[Civicsi06]

This is 2oz, got more to chop and a popcorn bucket full off looser nuts.
Should hit around 5 oz from 2 autos but 1 plant grew shit cus off lack off light being drowned out by the other one.
Overall I'm happy with that.

Very nice yield! Ok, I am going to switch the lighting over today. Right now its at 27" above the plant and I just wanna see how that does before I drop it down to 20". Unfort. the tent I had to buy is not very tall due to size of closet restrictions so the highest I can get my light is only 27" above plant....here's hoping this wont be a huge issue later on. I was also thinking about starting my soil grow to add into the tent but after reading your reply about how one plant can over take another due to lack of light makes me think that just growing one plant at a time may be best.

 

[Civicsi06]

Also, I have been checking my water temps and they are running an average of 72-78 degrees F. I know the temps should be around 62-68 degrees from what I researched. This cannazym that you were talking about, should I be using this stuff also right now and if so, how often should I use it?