yeh they're pretty close...the calmag has less N but 2x as much calcium and mag...They're basically interchangeable...just adjust if your plants have issues. I use calmag plus at about 2ml per gallon normally....I've used up to 8ml per gallon when running some botanicare stuff...it's pretty flexible.
Yes I seem to have a nitrogen toxicity.. So swapping out sensi a for cal mag plus might be beneficial? Also using sensi bloom b. IT IS WHAT IT IS ! Learn&Grow
Nah they aren't even close, the calmag has way more Ca and Mg per nitrogen than the other. Plus it has iron too
So I need to use both? Was just worried about making my nitrogen tox worse.. If that's what I'm experiencing.. At first glance i saw that the ratios were similar but the cal mag had less n.. But the only difference between the two is concentration ? Sorry I'm still a little confused. Obviously there different just wondering how exactly .. Thanx GG IT IS WHAT IT IS ! Learn&Grow
It's not the concentration that's different. You decide that yourself with the dosage. It's the ratio that is different. If you have an A and B formula you are better off sticking with it. If you need to add extra Mg, Fe, & Ca then you can add a supplement, but only if you need to. Are you sure you need to? The standard A and B together should be everything the plants need
My problem is to much nitrogen. I normally add a minimal amount of cal mag to my sensi a&b. But recently I've developed signs of nitrogen toxicity... Maybe I shoulda cut out the cal mag? But I'm using R.o water. What do u think ? Sorry for all questions.. Just concerned and have trouble finding solid information IT IS WHAT IT IS ! Learn&Grow
What EC or ppm are you mixing it to? Or what % of the maximum dosage are you using? I wouldn't use any supplements unless you have reason to
Flushed my Rez for 2 days with 100ppm water.. Had a little cal mag in it. Took out the water again and refilled. Added 275 Ppms of sensi b.and 100 Ppms of cal mag to 30ppm r.o water.. Haven't added any sensi a yet... Have it's at 375 ppm. Didn't get a chance to check on them yesterday. But I know the curled leaves won't recover.. So how do I look for improvements.. Only the bud leaves are effected by this major curling.. IT IS WHAT IT IS ! Learn&Grow
I'm about 3/4 of there recommended dosage. For the sensi b and cal mag. Maybe a little less IT IS WHAT IT IS ! Learn&Grow
375ppm shouldn't be too high. I can see why you want to change the sensi bloom A bottle for the calmag now. How long do you have left before harvest?
I have around 5 weeks left until harvest.. Sativa dominant hybrid. I was at 700 Ppms when the N symptoms appeared. IT IS WHAT IT IS ! Learn&Grow
I use this for flowering and I have never had any N toxicity and the nitrogen content is higher relative to the Ca and Mg compared to yours
Quick run down of what happened so I can get better input Rez was filled with around 30gals earlier in bloom. Slowly raising Ppms throughout. I let the water level naturally drop till about 5 gals were left in the Rez. (From 30gals) I didn't empty out the remaining 5 or so gallons and just added 15 gals of r.o water (I think this was my main mistake) and took Ppms to 700 from 650 ish. With nutrients. The next day the droppy bud leaves began. I never really noticed how dark the leaves were because I usually look at them with the hps on. I turned it off and they were defiantly a dark shade of green. I took out all the water I could.. Maybe a half a gallon, if that remained in the Rez. It looked very clean in there. I then added 15 gals of r.o water. And added a splash of cal mag. The r.o water has Ben around 20ppms,lately and after the cal mag was sitting at just about 110 Ppms.. The next day it was at 155 Ppms.. The day after that I took out all the water again and filled with 15 gallons again. The water sat below 50 Ppms.. No nutrients added. I proceeded with my dosage noted of sensi bloom b at 275 Ppms total and then added 100 Ppms of cal mag plus. No sensi bloom a. The ph was at 5.8 after adding. The next day the Ppms were at 365 and ph at 6.4 dropped it back down to 5.7. And didn't get to check on them yesterday.. The bud leaves won't recover.. But am I looking for new ones to grow out of the buds to have a healthier formation ? Also other things I've wondered.. Could humidity remaining at 35% cause this? I've also considered not enough air flow and to much light.. But even the lower bud sites are the same and ice moved fans to specific areas with no improvement in that spot. Thanx again everyone. IT IS WHAT IT IS ! Learn&Grow
Hmmm very interesting.., I will say these plants are rather picky tho. And someone else has posted in my journal that got clones from the same mother plant/dispensary as me and has confirmed this is a funky strain .. What's odd to me too is nitrogen toxicity should be visible in all areas if the plant..(all leaves) if I'm not mistaken? Another note* Just before the Rez change and dosage increase to 700 Ppms I did notice a couple dark tips on leaves.. Very dark tips on some.. No many tho at that time.. So maybe just a complete over fert? IT IS WHAT IT IS ! Learn&Grow
New leaves are unlikely to grow this far in to flowering, once the stretch is over that's pretty much it really for the leaves. If the ppm went from 375 to 365 over 24 hours then you aren't far from the correct figure. Probably 380-385 would be about right. Letting the waterline drop from 30 gallons to just 5 gallons may have caused the roots to dry out. Could it be root damage?
Quite possibly Edit.. Have you had a read of this? http://forum.grasscity.com/hydroponic-growing/1198022-how-determine-what-your-plants-preferred-nutrient-strength.html .
These were the roots about 2 days ago. What do you look for with root damage ? They look generally healthy to me.. Not sure specifically what I'm looking for though. Here's the buds and plants 2 days ago Also looks like they have heat stress on the tops but it not hot.. Just under the light is 78 Tent temps are 72-75 Humidity 35-40 Here's my sensi b bottle IT IS WHAT IT IS ! Learn&Grow
Yes this is what I follow That's how they got to 700 Ppms.. They kept slowly talking more and more ... Usually every 50 or so Ppm drop I would up it 50.. I think I was around 350-400 Ppms to start 12/12.(don't hold me to that). Example: 300ppms one day and the next day at 250 Ppms or a gradual decrease. Then I would take them to 350ppms. I learned the hard way It's always easier to add than take away. IT IS WHAT IT IS ! Learn&Grow