Do I need Cal-Mag Plus? DWC

[Keegan12L]

Hey all I'm currently doing my first grow and I decided to go with DWC. I have 2 plants going right now. One is still a seedling and the other is early veg. I am using GH Flora Trio series with tap water (tap water comes out of faucet 0ppm). I have been told to cut out the Cal-Mag Plus since I'm not using RO or distilled water. I am just trying to get a few more opinions about using the Cal-Mag Plus or not. Also, I am using equal parts of Micro, Grow, and Bloom. Is there anyone who has more experience with GH Flora series that might have a better feeding schedule?

Any help is appreciated, thanks!

 

[projectinfo]

If your using tap you probably don't need calmag plus. Your base nutes Have this already and your risking nutrient burn

 

[smokebros]

You have a very clean water supply if your tap is coming out at 0PPM. If I were you I'd absolutely supplement calmag in the DWC to the tune of 100-200PPM. Calcium is king in growing cannabis.

 

[Keegan12L]

You have a very clean water supply if your tap is coming out at 0PPM. If I were you I'd absolutely supplement calmag in the DWC to the tune of 100-200PPM. Calcium is king in growing cannabis.

If your using tap you probably don't need calmag plus. Your base nutes Have this already and your risking nutrient burn

This is the dilemma i'm in. From what I have read, Cal-Mag is a great supplement if using RO/distilled water because a lack of calcium/magnesium(or anything in the water). Since I am using tap water I keep hearing NOT to use Cal-Mag. I have looked up a water report for my city but haven't been able to find the information i'm looking for yet. If my tap water is 0ppm will there be enough calcium and magnesium in the water or should I consider supplementing?

 

[smokebros]

This is the dilemma i'm in. From what I have read, Cal-Mag is a great supplement if using RO/distilled water because a lack of calcium/magnesium(or anything in the water). Since I am using tap water I keep hearing NOT to use Cal-Mag. I have looked up a water report for my city but haven't been able to find the information i'm looking for yet. If my tap water is 0ppm will there be enough calcium and magnesium in the water or should I consider supplementing?

If your tap water is zero PPM then there isn't anything in it. No trace elements, no calcium, no magnesium. If that were the case then you 100% should supplement.

Edit: I should mention that not even my RO water is zero PPM, the lowest it's gotten is 5 or 6... Do you live on some glacial mountain of some sort? How do you manage zero PPM water from the tap?

 

[Keegan12L]

If your tap water is zero PPM then there isn't anything in it. No trace elements, no calcium, no magnesium. If that were the case then you 100% should supplement.

Edit: I should mention that not even my RO water is zero PPM, the lowest it's gotten is 5 or 6... Do you live on some glacial mountain of some sort? How do you manage zero PPM water from the tap?

Haha no idea. I actually just ordered some solution to calibrate it. I would hope a bluelab pen would be accurate 3 weeks out of the box. It only seems to go by 10's though

 

[projectinfo]

First of all, your not supposed to use a ppm meter in 0ppm water. It's like maxing it out. And if you actually to have 0ppm and don't know why.... I'm guessing you haven't lived there long or don't know much about your property. There must be a r/o machine on your line. Or your meter is fucked

 

[Lordhooha]

This is the dilemma i'm in. From what I have read, Cal-Mag is a great supplement if using RO/distilled water because a lack of calcium/magnesium(or anything in the water). Since I am using tap water I keep hearing NOT to use Cal-Mag. I have looked up a water report for my city but haven't been able to find the information i'm looking for yet. If my tap water is 0ppm will there be enough calcium and magnesium in the water or should I consider supplementing?

If you tap comes from the city the is no way you have a ppm or 0.if it’s a well there’s no way of having 0 pp. like others have said even ro water has something left in it. My ro on my sink is between 1-2 ppm. I use my well water for my rdwc which is about 200 ppm and it’s been tested so I know what’s in it and never need cal mag. IF somehow your water is 0 ppm which I hardly doubt you will most likely need to supplement with cal mag. It’s one of the vital elements your need for a healthy plant. Your using a blue lab pen? I’m guessing it’s the combo pack one? Do you have the ph pen as well? If so what’s your ph like most water at a low ppm will be more acidic.

 

[Cold$moke]

First of all, your not supposed to use a ppm meter in 0ppm water. It's like maxing it out. And if you actually to have 0ppm and don't know why.... I'm guessing you haven't lived there long or don't know much about your property. There must be a r/o machine on your line. Or your meter is fucked

Unequivocally this lol

 

[Cold$moke]

I think we told him he has to have some kind of filter in there somewhere



Op where you water heater and mechanical room?

 

[Lordhooha]

Haha no idea. I actually just ordered some solution to calibrate it. I would hope a bluelab pen would be accurate 3 weeks out of the box.

I think we told him he has to have some kind of filter in there somewhere



Op where you water heater and mechanical room?

if there’s a whole house filter it would t be zero those filters aren’t capable of even coming close to that level. And it’s very rare to find a home that uses an ro filter for whole home use just because it’s not practical.

 

[Cold$moke]

I agree if truly at a o ppm you wont hurt a thing by adding 100-200ppm cal mag before you mix the trio

But as projectinfo mentioned you might just lock it out especially when its young and doesnt have a big nutritional need.

But i agree cal mag is used in excess when your plant is vigorously growing.

I subscribe to the less is more camp in which you can always give mlre to correct a deficiency.

But its much harder to overcome a toxicity.

Your over thinking it

Just stary with trio and follow that damn directions on the bottle lol start weak and build it up

Just my 2

Does it say on the bottle to add cal mag to an ro water source?

Listen to the people that make the nutrients please

 

[Cold$moke]

if there’s a whole house filter it would t be zero those filters aren’t capable of even coming close to that level. And it’s very rare to find a home that uses an ro filter for whole home use just because it’s not practical.

We all know that lol

He seems to think his water appears at the faucet at 0 which is highly unlikely

 

[Cold$moke]

Unless hes living on a distillery

 

[Lordhooha]

We all know that lol

He seems to think his water appears at the faucet at 0 which is highly unlikely

I know I’m starting to think either A: like project said his meter is jacked or B: he has little idea on what he’s doing. Some of the purest water in the world isn’t naturally 0. 0pmm water will even pull minerals out of copper piping.

 

[Lordhooha]

Unless hes living on a distillery

He’s growing in the closet of a distillery lol.

 

[Cold$moke]

I know I’m starting to think either A: like project said his meter is jacked or B: he has little idea on what he’s doing. Some of the purest water in the world isn’t naturally 0. 0pmm water will even pull minerals out of copper piping.

Yes sir

 

[Cold$moke]

Water at 0 ppm is one hell of a flushing agent though with a little yucca and cane molases with b vitamins lol


It so good it will de ionize a ph probe in no time

 

[Keegan12L]

If you tap comes from the city the is no way you have a ppm or 0.if it’s a well there’s no way of having 0 pp. like others have said even ro water has something left in it. My ro on my sink is between 1-2 ppm. I use my well water for my rdwc which is about 200 ppm and it’s been tested so I know what’s in it and never need cal mag. IF somehow your water is 0 ppm which I hardly doubt you will most likely need to supplement with cal mag. It’s one of the vital elements your need for a healthy plant. Your using a blue lab pen? I’m guessing it’s the combo pack one? Do you have the ph pen as well? If so what’s your ph like most water at a low ppm will be more acidic.

So I calibrated my pen, which was mostly right anyway, and water is still 0. I mean it could be 1-9 but the pen only seems to go up an down by 10s. Either way is fine. I added a half dose of Cal mag when I did a res change and have noticed the leaves get greener so I will mess with the dose. PH of my water seems to be around 7-7.2 out of tap.

I agree if truly at a o ppm you wont hurt a thing by adding 100-200ppm cal mag before you mix the trio

But as projectinfo mentioned you might just lock it out especially when its young and doesnt have a big nutritional need.

But i agree cal mag is used in excess when your plant is vigorously growing.

I subscribe to the less is more camp in which you can always give mlre to correct a deficiency.

But its much harder to overcome a toxicity.

Your over thinking it

Just stary with trio and follow that damn directions on the bottle lol start weak and build it up

Just my 2

Does it say on the bottle to add cal mag to an ro water source?

Listen to the people that make the nutrients please

Yes, it says to supplement with Cal-Mag if using RO.
I can read the bottle just fine. I am just looking for others opinions and looking for the optimal dosage. I've seen other charts that use a significant amount of the grow and micro, but less of the bloom. I'm just trying to gather as much info as I can so I can adjust and experiment to what works best in my situation.

Thanks all for the help! Looks like I will be needing to supplement with Cal-Mag.

 

[Lordhooha]

So I calibrated my pen, which was mostly right anyway, and water is still 0. I mean it could be 1-9 but the pen only seems to go up an down by 10s. Either way is fine. I added a half dose of Cal mag when I did a res change and have noticed the leaves get greener so I will mess with the dose. PH of my water seems to be around 7-7.2 out of tap.



Yes, it says to supplement with Cal-Mag if using RO.
I can read the bottle just fine. I am just looking for others opinions and looking for the optimal dosage. I've seen other charts that use a significant amount of the grow and micro, but less of the bloom. I'm just trying to gather as much info as I can so I can adjust and experiment to what works best in my situation.

Thanks all for the help! Looks like I will be needing to supplement with Cal-Mag.

Do you own your house or are you renting or what? Lol that’s nuts I’ve never heard of zero ppm from the tap. Unless you live in an apartment that has an industrial ro machine supplying the building.