Like I mentioned 2 weeks ago, your top growth is affected rather than bottom leaves. This is a micronutrient deficiency. I think it may be copper deficiency from your using 1700 ppms and a high ph. Nitrogen is binding the copper in compounds in the lower leaves and not allowing it to move up. Also, too much phosphorus may be causing better nitrogen utilization and binding up of the copper.OsWiZzLe said:** my run off was 6.3-6.4....but it was 5.7-5.8 going in**
pieceofmyheart said:RESPONSIBILITY!!! Take responsibility for your own garden man.
If you take advice from Joe Blow, and your grow didn't go so well....Joe did not ruin your grow, YOU did.
If you feel like you got a magnesium problem, spray once with 1 teaspoon per quart of water epsom salts. Spray both sides of the leaves.
Blackvelvet said:Like I mentioned 2 weeks ago, your top growth is affected rather than bottom leaves. This is a micronutrient deficiency. I think it may be copper deficiency from your using 1700 ppms and a high ph. Nitrogen is binding the copper in compounds in the lower leaves and not allowing it to move up. Also, too much phosphorus may be causing better nitrogen utilization and binding up of the copper.
Leaching only changes the rootzone...it does not instantly change the plant.
What is the form of copper does canna use? Look on the label. Is it copper sulfate or copper chelate like edta. This makes a huge difference because copper is very reactive especially at higher ph's...it becomes unavailable.
Solution: spray once with a copper fungicide like bordeaux mixture.
If you feel like you got a magnesium problem, spray once with 1 teaspoon per quart of water epsom salts. Spray both sides of the leaves.
Don't spray while lights are on to avoid shattering a bulb and causing a fire or hurting you. After spraying you can turn the lights on.
One last thought...
cal mag plus does contain copper and it may be chelated. 2ml per gallon is very weak and only adds 6 ppm magnesium and 17 ppm calcium.