Need help? Excess or deficiency?

[Lil Dab]

Mepthisto seeds multiple strains. 3 and 5 gallon grow bags. OF soil in he bottom of pot and HF and top layer of pot. Only giving them water with 200-225 ppm. 150 ppm to start out of tap and 50-75ppm of calmag. With a ph of 6.4.Last watering with runoff earlier in the week showed 1500-2000ppm in runoff still and ph 6.3-6.5.depending on plant. End of week 5 day 35 for all.

 

[Suki]

Why are you only feeding calmag? OF/HF both have added calcium so its really not necessary, especially if your water already has Ca in it. IIRC calmag can also be heavily N based depending on brand so you may be giving them too much N, since both of those soils also have added N.

 

[Tom Bombadil]

Soils gonna poop out.
Straight ffof barely lasts 3 weeks or so
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[Mañ'O'Green]

I concur with both @Suki813 and @Tom Bombadil. You are putting way to much calcium into those pots and you will not be able to get it back out. Layering soil is a mistake. The taproot on a cannabis plant can grow 9 inches in 3 days so the roots are in the bottom of the pot way sooner than you think. When the roots hit soil that may be too hot they can stop growing in that direction. Just mix your soils for best root growth. OF and HF both have Dolomite lime as part of the formula. This would provide plenty of calcium and magnesium for a first grow. If you are reusing soil that is a whole different story. STOP adding Calmag. You may consider going with distilled water for a while to cut down on calcium going in from now on.

If you are staying with the organic approach The Build a Soil top dress is an excellent choice.

 

[Lil Dab]

I concur with both @Suki813 and @Tom Bombadil. You are putting way to much calcium into those pots and you will not be able to get it back out. Layering soil is a mistake. The taproot on a cannabis plant can grow 9 inches in 3 days so the roots are in the bottom of the pot way sooner than you think. When the roots hit soil that may be too hot they can stop growing in that direction. Just mix your soils for best root growth. OF and HF both have Dolomite lime as part of the formula. This would provide plenty of calcium and magnesium for a first grow. If you are reusing soil that is a whole different story. STOP adding Calmag. You may consider going with distilled water for a while to cut down on calcium going in from now on.

If you are staying with the organic approach The Build a Soil top dress is an excellent choice.

Yeah I have learned that now. Won’t be layering soil any more. Also have learned about not needing lime and calmag. I’m not set on being organic. I have megacrop 1 part. You gave me a balanced nute schedule for my coco grow using the MC 1 part and epsom salt and little calmag. Would that work in the soil also? Should I wait to feed and only be giving RO water? Or diluted tap water? How should I proceed from here? Believe it or not this my best run so far and would like to get them straightened out before full flower mode.

 

[Lil Dab]

Why are you only feeding calmag? OF/HF both have added calcium so its really not necessary, especially if your water already has Ca in it. IIRC calmag can also be heavily N based depending on brand so you may be giving them too much N, since both of those soils also have added N.

Not exactly sure why lol. Reading to much miss information online. I had read that using only RO water wasn’t good either. And that 150-200ppm water was the better route and friends told me they used calmag every watering. So that’s where I was at. Didn’t think they needed to be feed nutes and didn’t want to use straight RO water. How would you proceed being that there about to flower? This only my third go and stilling learning a ton everyday. I was planing to using MC 1 part and bud explosion for flower. everything I read says soil is gonna be depleted anytime now but I have high ppm runoffs still over 1500ppm.

 

[Suki]

Not exactly sure why lol. Reading to much miss information online. I had read that using only RO water wasn’t good either. And that 150-200ppm water was the better route and friends told me they used calmag every watering. So that’s where I was at. Didn’t think they needed to be feed nutes and didn’t want to use straight RO water. How would you proceed being that there about to flower? This only my third go and stilling learning a ton everyday. I was planing to using MC 1 part and bud explosion for flower. everything I read says soil is gonna be depleted anytime now but I have high ppm runoffs still over 1500ppm.

I'd definitely defer to @Mañ'O'Green on all that, as I'm still learning myself.

 

[Mañ'O'Green]

Yeah I have learned that now. Won’t be layering soil any more. Also have learned about not needing lime and calmag. I’m not set on being organic. I have megacrop 1 part. You gave me a balanced nute schedule for my coco grow using the MC 1 part and epsom salt and little calmag. Would that work in the soil also? Should I wait to feed and only be giving RO water? Or diluted tap water? How should I proceed from here? Believe it or not this my best run so far and would like to get them straightened out before full flower mode.

Yes that is a balanced formula for a balanced soil. Run-off can be misleading. Just watch your plants. They will start to turn lime green when it is time to feed them. When you fertilize soil it is way different than coco. The nutrients remain in the soil until the plant uses them so you may only need to feed once or twice a week. the other time is just PH water.

 

[Lil Dab]

Yes that is a balanced formula for a balanced soil. Run-off can be misleading. Just watch your plants. They will start to turn lime green when it is time to feed them. When you fertilize soil it is way different than coco. The nutrients remain in the soil until the plant uses them so you may only need to feed once or twice a week. the other time is just PH water.

Ok perfect kinda what I thought. So when I make just plain ph water how many ppm from tap water is safe? Because I can’t make ph water from straight RO water correct? That was kinda the reasoning behind putting calmag in water so that it would ph properly