coco dtw first grow

[datal4b]

they are 33 days old and look like clones? i started feeding at .3 ec and they continually just yellow from the bottom like they're not eating. pure canna coco. i use ro mixed with tap to .2 ec, canna coco a+b & drip clean i have tried bringing it higher in ec just to have the same effects but now with burnt tips. og biowar tea that comes out at ph6 and liquid gold foliar. cut the liquid gold and the tea with no effects. they filled the mini solo cups with some roots that were white but so-so in 28 days?? i must be doing something wrong.. i put them in bigger pots thinking maybe they were root bound but idk... doesn't seem like it. i found some springtails in the medium and i applied hypoaspis miles and nematodes. no effects. the environment is 79f w/ 70-75rh 800ppm co2. wtf. they should be over 2 ft tall now at least

https://www.icmag.com/ic/picture.php?albumid=71610&pictureid=1703671

https://www.icmag.com/ic/picture.php?albumid=71610&pictureid=1703670

https://www.icmag.com/ic/picture.php?albumid=71610&pictureid=1703669

 

[datal4b]

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[datal4b]

 

[iloveweed123]

Canna A&B is very light on N and that's probably your problem, made worse by trying to make up for it

Best bet is try something different for veg, Lucas 6/9 for instance

 

[Mikell]

I would reduce CO2 to ambient and feed 1.0-1.2 EC base nutrients. Water every other day for a few until (if) they start turning around, then increase feeding to daily. Start ramping up CO2 and feed strength from there.

 

[GonjaLove]

They are hungry! 1.0 - 1.2 as stated above and watch them boom. P.s. It's hard to go wrong with the good old 6/9 especially in veg. What were you growing in before coco?

 

[Space Case]

I agree. Feed at least 1.0 EC, maybe get some CalMag, lower your CO2, and get your RH down. They are P and N deficient. I would also get em into bigger pots and cut them in half (top/hst), then foliar feed calmag and liquid kelp.

 

[Bush Dr]

I would reduce CO2 to ambient and feed 1.0-1.2 EC base nutrients. Water every other day for a few until (if) they start turning around, then increase feeding to daily. Start ramping up CO2 and feed strength from there.

Agreed

CO2 in small plants is often more trouble than it's worth until the plants are fairly well established enough to actually benefit from it

 

[datal4b]

i turned the co2 off like you all said. i have been feeding at 1.0EC but for sure not every other day, probably more like every 3-4 days ish. to clarify then, from what im taking from you all, you aren't wanting it to dry out at all? the bag says they root best when it's not too wet i'm guessing that's bs..?

i have used rdwc uc and soil only previously

 

[fredDRO.MoBB]

are you watering with cold water? median cold? I remember a while ago I was not checking the temp of water and the plants growth got stunned and began showing nutrient deficiency. when I checked temp I realized it was too cold. soon as I fixed the temp of water going in the problem fixed itself withing a week or two

 

[GonjaLove]

i turned the co2 off like you all said. i have been feeding at 1.0EC but for sure not every other day, probably more like every 3-4 days ish. to clarify then, from what im taking from you all, you aren't wanting it to dry out at all? the bag says they root best when it's not too wet i'm guessing that's bs..?

i have used rdwc uc and soil only previously

I will let my coco dry almost totally 2 times after transplant then after that mine stays moist constantly. Dry coco = salt buildup. In flower with drippers I usually feed 3-4 times per day...about a quarter gallon per feed per 2 gallon pot. Never ever run straight water thru coco. Only in final week to 10 days. I also never runoff once my roots are established...just enough to keep wet...and I don't use drip clean. My ppm coming out will typically only rise by 70 - 80 ppm. Keep it moist

 

[datal4b]

~70f

what temp do you use

 

[datal4b]

i'm gonna keep it wet now and see what happens maybe there was salt building up

 

[GonjaLove]

70 degree water is fine but I wouldn't creep much above that. Looks like your trays are on a basement floor?? You want your root zone to stay nice and warm. I fucked Up a whole grow in the winter when my plants were on the garage floor. My water is usually around room temp 68 degrees.

 

[datal4b]

does the medium not become the same temp as the environment? if you want the medium warm why is cold water the objective

 

[Ru5tyNaiL]

Cold water isn't the objective, the objective is to keep the root mass sufficiently warm without cultivating pathogens from water that's too warm. He wanted to make sure the water you were using wasn't too cold.

Also a cold floor is like a heatsink, it sucks the warmth out of whatever is contacting it trying to find a thermal equilibrium. It's best if your trays sat on something that provided an air gap off the floor. So ambient temperature air can circulate underneath.

 

[datal4b]

i see, i knew i had to raise them for drainage when using drippers, not for that reason though. i have up until a couple days ago had them up in the air on a trash can in some trays, just watering into a bucket then putting back on the tray. i will raise them up

 

[Levitationofme]

Coco is basically hydro/ perhaps untill you have a few roots let it dry between waterings. After that it just concentrates and dries salts onto the coco. That leads to other issues.

I was doing hand watering and I watered with nutrient solution a couple times a day, alternated some Plain water when needed. But I always kept the coco moist.

 

[datal4b]

i followed djm's coco trees thread for a while & he said he was drying it out to promote roots with excessive run off i think i did it for too long though. im hoping that is the prob

 

[datal4b]

things are lookin better now thanks for all the suggestions