Coco ebb & flow overwatering or N deficiency?

V

Van Heineken

Member
rkymtnman said:
i hated coco. felt like i was fighting with it the whole grow. finally decided that my medium wasn't going to give me headaches and went to a different medium.

i agree with @boilingoil . i would try a different nute regimen.
have you ever heard of H3AD's formula for coco? it's what i used and was pretty simple. GH micro, bloom and epsom salts.

is RO water an option? would elliminate your water as a potential problem source too
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Thanks for the reply. I agree I am definitely switching nute regimen after this run. I feel like the recommended feed charts by GH is what got my coco way too hot with a build up salt in the first 2 weeks. Then I switched to about 50% strength in the last 2 weeks supplementing with gypsum and epsom, kelp and maxicrop. What a nightmare lol.

I didn't know anything about the forums until I just read up on it. Seems very simple and looks like he has had success with it. For now I am stuck since I have already purchased this Cocotek line.

I want to go RO water but I'm not ready to spend money on it yet until I can get good enough to grow without it first.
 
V

Van Heineken

Member
Anybody else have a diagnosis or suggestion besides changing my nutes entirely ? Perhaps these need to be flushed to about 550 PPM run off (nutrient mix)
 
boilingoil

boilingoil

Well-Known Member
Van Heineken said:
Update:

So I took everyone's advice and upgraded my Coco Ebb & Flow setup to a top feed drip setup. The drip emitters are the ones that drip 1/2 GAL per hour so I don't really have to worry about how much water each pot is getting. I stopped watering for about 5 days and let the roots settle. Once I started watering again with the drip system within days I saw a huge improvement in growth. It worked!

Now I seem to be having another issue. Please look at the pictures. To me its seem that I having a calium lockout due to the high amount of P that the coco medium lets go, yet holds onto the CAL/MAG. Here is some information about the grow for the last 2 weeks:

Strain: WW, NL, Cheese, Green Crack, Jack Herrer, Blue Berry
55 GAL res changed weekly to about 30 GALS. Watering 3 times a day for 5 minutes during lights on
Nutes: Cocotek A/B 6.75 ML/G , GH Floricious 0.7ML/G, Age old Kelp 0.625 ML/G, Maxicrop 0.5 ML/G, Epsom Salt (0.2 TSP/G), Gypsum (0.2 TSP/G)
PH: 5.8-6.4 (mostly around 6.0) TEMP: 64 at night - 82 during lights on. Humidity 61%

I am using tap water which I got tested at the following:
PPM: 271
Sodium: 41 PPM
Potassium: 2 PPM
Magnesium: 19 PPM
Calcium: 19 PPM
Total Hardness: 127 PPM

I'm running at about a total of 850PPM - 271 water = 550-600 PPM Range.

I have considered everything, Nitrogen, Potassium, Phosphate, Calcium I am out of answers. Anyone that can give me some insight would be very very helpful.


THanks!

VH

I would worry about the sodium content in your tap. Do you use a water softener in your house? If so take your water before it goes through the softener.
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V

Van Heineken

Member
Eph3m3raL said:
How much run off are you getting when watering? Have you tested ppm on run off?
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My best estimate is I am getting about 20% run off. I tested the PPM and it was 1200 or 950 adjusted for tap water. Seems pretty high since my reservior is 550PPM (adjusted for water)
 
Eph3m3raL

Eph3m3raL

Member
Van Heineken said:
My best estimate is I am getting about 20% run off. I tested the PPM and it was 1200 or 950 adjusted for tap water. Seems pretty high since my reservior is 550PPM (adjusted for water)
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Sounds like you have to many nutrients stored in the coco. I'd flush them until the ppm came down then change my water schedule to 1 time a day 30 minutes before lights come on and make sure you got 10-20% run off. If your plants need more water add a second watering 6 hours after the first one.
 
V

Van Heineken

Member
Im using nutrient profile found on cannastats trying to figure out what your PPm are for each of these ingredients in your tea? What's your process?
 
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