Cal mag deficiency???

Buddernugs

Well-Known Member
Strain is blue dream in coco dtw ro water as base 200ppm cal mag then top off to 650-700ppms with coco tek a and b ph in 5.9-6.0 ph run off 5.9 ppm run off 750... it’s hot in my area ac won’t keep up so I think their drinking more water than they are eating so that should explain why my ppms are always higher coming out even after flush... I just made a batch of fresh Nutes and used 350ppms of cal mag ato see if that helps iv heard blue dream is a glutton for cal mag and nitrogen am correct in thinking it’s cal mag deff? It’s only on top deep down in canopy it’s all nice and green
 

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buyyouabeer

Well-Known Member
Those rust spots look like calcium issues. Did you also say you were flushing the coco? That would explain the Ca problem, never flush coco. Turns it into a calcium hog.
 

Buddernugs

Well-Known Member
I always do an h2o2 flush 3rd week into flower to kill any root rot before it sets in I immediately flush feed each pot with 3x their pot volume to replenish the Nutes
 

Buddernugs

Well-Known Member
I hope the 350ppm of cal mag I just gave them gets them back up in running iv had 3 bad harvest back to back due to inexperience I really don’t want a 4th
 

Buddernugs

Well-Known Member
update it was not cal mag def it was leaf rust (a fungi) I touched a clean leaf onto a plant that had no signs of rust spots with a leaf that was infected from another plant 12 hrs later that healthy leaf now has the same rust spots on it....I was sure it was cal mag issue oh well....I’m flooding them with 3% undiluted h2o2 and spraying every inch of them with 3% undiluted h2o2 to kill it off as well......will keep you posted
 

buyyouabeer

Well-Known Member
Just curious if the rust spots rub off? If yes then you are on the right track, if no back to the Ca issue. Quite possible for your other plants to start showing deficiencies now as well. Just thinking out loud.
 

Buddernugs

Well-Known Member
NO they dont rub off...I’m stumped 350ppm cal mag for 2 days in hydro should have stopped the def in its tracks
 
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