Still fighting Yellow w/brown spots

I am hoping someone can help me before this poor plant dies.
The stats:

Plant was fine prior to transplant.

4 week veg (mother) 400 W halide 20" away Day 74 night 66F

Coco / 20% perlite in 7 Gallon grow bag.

Well water P.H. 5.6 and cond @ 23 ppm

Flush water P.H. 5.9 and cond @ 128 ppm

Upon signs of problems I flushed w/approx 25 gallons tap water
and 1/4 strength Dutch Masters Gold "grow" with 1/2 Tsp pr/gal
CalMag. It has been almost a week and the plant does not seem
to be recovering. All new growth has stopped. I am not sure which
direction to go and don't want to make matters worse. Is the plant starving with such low PPM? Can anyone make a recommendation. Thanks

personally, I don't feed for a week prior, or a week after, transplanting ... promotes the roots to search for nutrients ... :smokin:

Isnt important to water the plants 3 days in a row after transplanting? With any other plant in the world it is...
so?

Curious if over watering could cause part of these problems. I have found
with grow bags and coco it seems if I dont set the bags on a grate of some
sort that the bottom 2 or 3 inches seem wet for coco???

Sounds like your envirionment is good but after she gets jacked up it can take 2wks or more to come around providing the cause has been attended to. As far as that goes, without complete details about your entire process to now, just too hard to tell. Are those the tds values after nutes are added? On your post info, does cond. mean conditioned water? If so, it may have sodium in it if resin in conditioner is old. Salt=:( girls. Ever checked the run-off water ph. If the soil has an off ph it can reduce or stop intake on some nutes. Looks like the signs to me. post up as detailed info as you can and a dirt wizard will guide you through it as I am far from it with the terra. Also is she in a 8-10 gallon bag? Usually a good flush takes about 3x pot/bag volume. should feel pretty light before watering again. If soggy and not just damp then I'm with TIP, your prob over-watering

quarter strength gold sounds too weak. flushing makes that worse. if you see alot of yellow, they could probably use some food.

For growing in soil your ph is low.....it shoud go in and come out between 6.2-6.8 for soil. Edit: I see you are in coco so forget that last remark.

I also remember Stinky talking about those grow bags and saying they are not meant to be be moved around......it breaks the grip between the soil and the root because the bag itself is flimsy and not solid. You are supposed to set them somewhere and not move them around. That may be part of your problem as well.

Quote:

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Originally Posted by Nikolaus

Isnt important to water the plants 3 days in a row after transplanting? With any other plant in the world it is...
so?

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i've never done this......or even heard of it for ANY plant so is that a coco rule or something?

Quote:

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Originally Posted by Nikolaus

Isnt important to water the plants 3 days in a row after transplanting? With any other plant in the world it is...
so?

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If you want yellow leaves with brown spots, then yes, this is a good way to get there. Always allow soil to dry a bit between waterings. (early clones and seedlings being the exception) Never keep soil saturated.

First off, let the soil dry between waterings. Looks to me like root stress. Could be the onslaught of root rot, or you could be damaging (breaking, crushing) the roots by moving the bag around. (or both)

I grow in soil, but isn't that a bit low for ph levels?

Did you mix 25 gallons of 1/4 strength nute solution for flushing, or did you add the solution after flushing?

I thought low ph as well RT....but hesitated to say something because I wasn't sure enough about coco to say. I would keep my coco stuff at something closer to 6.2 but I'm really just guessing there. :)

Well guys, i'm not sure about weed, just asking.
By the way, two of my friends with Phd in Botanic said that. But guess that's for their regular plants.
Nevermind! :)

Totally too soft source water. You MUST add calmag up to 250 ppm, and THEN use a coco nute. That's calcium def right there. If your nute is not a coco nute, add it up to 300ppm instead. Coco scavenges calcium.
Also, with coco + perlite, it is super hard to over water. But in grow bags, it is hard to do the lift test- you should not get in the habit of moving grow bags around! They jostle the roots and can damage them.

Plants are in start of second week of flower, strain unknown. Veged for 4 days.



Indoor
1000W HPS 15" from canopy.
300CFM exhaust @ 200 CFM intake from outside air.
Co2 @ 1200 PPM
Day temp 78f
Night temp 68f

Humidty is 40% but I don't know if I trust the cheap meter.

Well wtr @ 5.6 ph and ppm @ 25

Dutch Masters "grow" 1 tbs A+B per gallon
1 tbs H202 pr/gal
1/2 tsp potash pr/gal
1/2 tsp CalMag pr/gal

Total PPM @ 980

Run off @ 6.0 ph and 480 PPM

Any ideas? Out of 16 plants 11 are starting to show signs. Thanks peeps

If i were to guess I would say it looks like nute burn

Soil? Is water being splashed on the leaves? Kind of looks like that could be your problem but I can't give a definite with the info you gave. Is it on the lower leaves or all of them? New growth or old growth? Does look like nute burn of some kind.

Quote:

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Originally Posted by tip302327

..... Veged for 4 days.

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could be a problem

Could, if anything they could be too young for the nute doses.

It is on the older leaves. I have be using a 1/4 strength Liquid Light
right when the lights come on. I noticed the pic isnt that good but
if I open it with windows viewer and increase image size it is
very apparent. The plants over all look to be Light on "N" but I have burned the crap out of plants before using Dutch Masters so Im going slow this time
tring to find out what this strain likes. Out side of the discolor and spots, all 16 plants are growing at a freak rate and tops are standing straight up like they are very happy. Still i think this is just going to progress worse if I cant figure out what they need or dont need anymore of..

Thanks everyone for the feed back. Stinky, can you direct me on the 250-300ppm CalMag? Should I subtrack my 25 PPM water from the total 250 PPM? And should I just water with the CalMag or add it to my next feed? I may have errored because I flushed when I first noticed a problem and water logged the plants. I have found that when using grow bags, if you dont set them on something, "I use Perlite" the bags dont seem to drain completly very well. I have heard it is impossible to over water using coco/perlite but have found this to not be true completly with younger plants and flushing heavy. Thinking back to my last grow, I added fine lime to the coco and did not have this problem. These plants are from the last grow, clones. I read somewhere that it is not necessary to add ammements to Coco when using full spectrum fertz. This is the second grow on this batch of Coco. I flushed the used coco with water until my runoff PPM was below 50 and then cooked it in black plastic bags in the sun. Seems to all point to a cal def. I will post the outcome for future reference to others. Thanks so much for all your imput. t

Start with your 25ppm tap water. Gradually add calmag until the ppm of the solution reads 300. Then proceed as normal- use this water if you are doing a water-only feeding or adding nutes to it.
Set the bags on a grate like a cookie drying rack and slit some more holes in them if they drain crappily.
Lime in the coco worked last time because it added enough minerals to make up for your soft water.
Don't consider CalMAg an 'amendment' or 'supplement'. It is easier to think of it as 'concentrated awesome plant water'! It gives you the ability to make a water that is exactly right to form the base for any other nutes you use. Like if you want to make a cup of hot cocoa with just powdered cocoa, but you only have water, well first you have to add powdered milk to the water or it's not going to taste right. The CalMAg is like the fertilizer equivalent of the powdered milk. Once you have reconstituted milk, you can make hot cocoa or cereal or just drink it. Once you have reconstituted plant water, you can add grow fert, or bloom fert, or just give it to your plants. Get it? Coo. :cool:

Hey I merged these to make sure that your info was all together, like the coco medium for example.
Can you get a larger pic showing the plant(s) that those damaged leaves came off, including the pots and how they are situated in the room?

I would try to get your ppm around 800 and feed your plants for 20 min. Watch your ppm! If it rises then that mean your plants are using more water then nutes..if it lowers then that means your plants need more nutes!give it a try.. it works for me.. i have a ebb & flow and like to keep my ph at 5.8 =) goodluck!

Ok, stink and others...Im working on pics so we can proceed. brb

Ok, yesterday I added 300 PPM CalMag/water to each plant and about 3 days ago I made up a light CalMag spray (1/2 tsp / qt) and sprayed tops and bottoms of all plant leafs. The one larger plant (veg#1) Has started new growth an appears to be doing much better. I suspect that the affected leafs will not repair themselvs??? Would it be wise to add some domolite at this point or continue on with the CalMag with each feeding? Stink, I am unclear what you are telling me to do in reference with the CalMag? All of the "flowering plants" that I added 300 PPM CalMag to yesterday Are still growing at a unreal rate but I will need to wait to see the results.

1st pic> 2 month old veg to be mother plant
2nd pic > flower room
3rd pic> close up of plant put into flower on 11/28

Hi all. 1st off, thanks to everyone for the help! My problem was a severe case of Calcium defeicency. Had I stuck to what I knew worked and added dolomite lime to the Coco first, I would have averted all these problems. Since my well water is so soft...< 30PPM and I didnt add anything on this grow the plants suffered. I asked myself why I didnt add the lime on this grow and it was because since I was reusing the Coco I wanted to be sure I was starting with a fresh, clean substrate and I have read articles that you don't need to add anything to Coco. This would probably be somewhat true if my water had any minerals in it. It's a joke around here because on countless times I have took A PPM reading of bottled water someone just paid for and show them how unpure it really is. I am now curious if adding, maybe 100 PPM CalMag to my bubbler cloners would make my plants root any faster or grow more roots in the same amount of time. Since the plants I have been pulling cutting from, the cloner water, the fresh Coco I transplant from the cloner with and the Coco that the babies go into (1 gallon grow bags) is all defeicent, by the time the plants are in the 2 week of flower they were really showing badly.

A couple questions for the pro's:

Should I add CalMag to the cloners? and if so how much?

I am growing a short crop and only veg for 4 days. What are your thoughts on one gallon grow bags?

Thanks again to all who gave input...