Nutrient help coco

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Thisguy-4'

Active Member
Can anybody help just not sure if I should be adding any cal/mag to my water my tap water czn come out at 0.2 or 0.1 ec and seems to be the same after my 3 stage filter

I'll post pics of my water quality and the powdered nutes I'm using

I'm just wondering if I should add the powdered cal/mag until 0.4 ec it also contains N but I do have vitalink cal/mag which has less N I think

Hydrocrop say you shouldn't need the Cal/mag
But say if you have soft water to just add more part a

Also they state to use in equal amounts the a and b and then change ratio in flower for more PK but on thier pdf guide they have different ratios from the start of veg

Could anyone please help me out and tell me if I even need to add thier cal/mag and also what would be the best ratios of A and B to use throughout the whole grow I know I'm asking a lot here but all the percentages and npk values just baffle me when I try to calculate them thanks in advance
 

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T

Thisguy-4'

Active Member
PopAndSonGrows said:
This might be vague, but I'm serious. As it pertains to coco grows, you only need calmag "if you need it". I say use the regular feed schedule and monitor how your plants react to it
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Yes I was just using the A and B at equal ratio but I'm not sure if there is enough in there for cannabis or if I should be using different ratios in veg to maximise growth for cannabis needs

Also I usually would just wait rather than add anything because can go round in circles but my ph calibration light has been flashing over a week and can't get any buffer solution until next week

They seem to grow ok but can see a slight deficiency looks like mag deficiency but also affects newer leaves so thinking that's iron deficiency

So maybe it's a lockout from ph I usually feed at 5.8 then slowly change to 6.2 but since I seen the deficiency I started to feed only at 6.1 6.2

Also tried testing the ph of my 3% hydrogen peroxide which I read should be six and came out at 4.7 but it's a half bottle so not sure how correct it would be

my tap water shown 6.8 that's supposed to be about 7 0r 7.2 so I just tried feeding with .3 wc of that hydrol cal/mag and my normal 50 50 ration on the a and b and ph'ed to 6.4

I also red something about using a certain vinegar to check weather ph is off

Also I think another problem could be the tents been about 65f lights on for couple weeks getting warmer now also thinking daily watering will be better than ever other day
 
PopAndSonGrows

PopAndSonGrows

Well-Known Member
I still say just go with the base feed. You're only gona need cal-mag if your plants start looking like this:
Screenshot_20230130-173031.png
It's what i call "tiger striping", and I get it quite a lot as a coco grower. Calmag fixes it 9/10 times.
 
PopAndSonGrows

PopAndSonGrows

Well-Known Member
Gemtree said:
Cold wet roots lock shit out and can resemble mag def. Get that temp up for sure
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Nah i think the mag issue is more related to cation exchange within the coco coir itself, it basically can rob the plant of magnesium, calcium to a lesser degree, and also sodium and potassium. Coco drains so well, I don't think there's any way you can drown a decent sized plant. Cold is another issue entirely but I think plant growth would just slow or stall, plants shouldn't show a deficiency from being cold, unless we're talking about prolonged exposure to extreme cold the plant can change all sorts of colors
 
coreywebster

coreywebster

Well-Known Member
Thisguy-4' said:
Yes I was just using the A and B at equal ratio but I'm not sure if there is enough in there for cannabis or if I should be using different ratios in veg to maximise growth for cannabis needs

Also I usually would just wait rather than add anything because can go round in circles but my ph calibration light has been flashing over a week and can't get any buffer solution until next week

They seem to grow ok but can see a slight deficiency looks like mag deficiency but also affects newer leaves so thinking that's iron deficiency

So maybe it's a lockout from ph I usually feed at 5.8 then slowly change to 6.2 but since I seen the deficiency I started to feed only at 6.1 6.2

Also tried testing the ph of my 3% hydrogen peroxide which I read should be six and came out at 4.7 but it's a half bottle so not sure how correct it would be

my tap water shown 6.8 that's supposed to be about 7 0r 7.2 so I just tried feeding with .3 wc of that hydrol cal/mag and my normal 50 50 ration on the a and b and ph'ed to 6.4

I also red something about using a certain vinegar to check weather ph is off

Also I think another problem could be the tents been about 65f lights on for couple weeks getting warmer now also thinking daily watering will be better than ever other day
Click to expand...
Buy yourself some calibration fluid and check your ph meter is accurate
 
Amaximus

Amaximus

Well-Known Member
You really need to read a basic guide to coco growing and then come with better, more specific questions.
 
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