Follow My Current RDWC Setup, helpful tips are welcome! JACKS 321
myke
Well-Known Member
Also google up K Potassium deficiency.Some good info there heres one.
https://www.alchimiaweb.com/blogen/deficiency-excess-of-potassium-cannabis/
https://www.alchimiaweb.com/blogen/deficiency-excess-of-potassium-cannabis/
Ro water
jonnynobody
Well-Known Member
What issues did you have? What kind of water are you using? Reverse osmosis? Tap water? I assure you running 1.8 EC was not your problem. Something else is amiss in your garden whether it's water quality, PH issues, water sterility issues, etc. Something isn't right. Clearly at 1.1 EC you are still having issues. You have not yet identified the problem from your prior grow. I'd bet apples to oranges you're using tap water, and is the source of your issues.
Edit: Just read your response that you're using RO water. If you're starting with 0 PPM water then something else is the source of your problems. Order of mixing your elements? Jack's, calcium nitrate, then epsom salt. Could it be your RDWC setup is not dialed in correctly? I've never done RDWC and have no clue what it is, but clearly it's not working as effectively as you'd like because your foliage is showing damage.
myke
Well-Known Member
I assume your adding 150 ish ppm calmag?
Ro water, the only thing i changed was the ec from last grow.
I use part A 3.6 grams, part B 2.4 grams, 1 grams epsom
jonnynobody
Well-Known Member
The only variable that hasn't changed is your RDWC setup. I suspect it is the source of your problems.
How so? Since it's the same what would cause the improvement other than lowering the EC?
The tent stays under 82 degrees. I could lower the intensity of the light? Would that do it?
myke
Well-Known Member
Well then,RO water in most cases needs the extra Ca.Not familiar with jacks but isnt A part calnit or something ?
Part B is cal nitrate
TintEastwood
Well-Known Member
myke
Well-Known Member
Its leaf temp you want to check,IR thermometer will do that.
jonnynobody
Well-Known Member
I'd bet a peanut butter and jelly sandwich your plants are suffering good old fashioned LED light burn. I just reviewed the hardware you're running in that 4x4. Why do I suspect this? Your monitoring everything like a good gardener should. You're experiencing the same issues at 1.1 EC you're experiencing at 1.8 EC. 550W of LED in a 4x4 is too much light. I had to relocate a 450W spider farmer board to my flower room from a 5x5, because I couldn't operate it at more than 50% power (225w) without bleaching and frying my foliage. They looked like your leaves. Burnt edges almost reminiscent of a calcim deficiency / nute burn and light colored leaves almost reminiscent of a magnesium deficiency. Classic LED light burn my friend. Turn your light down to 50%. Increase your EC to the proper strength that you should be feeding which is 1.6-1.8. Your plants will rebound. Blast them with light after flower set has occurred in the 2nd-3rd week of flower. Who cares if you fry a few fan leaves at that point? Fatten up those flowers, but at this point of your grow cycle the plants don't have any flowers and do not want to be blasted with that much light. You're loving your girls too much sir. Slow your roll and reduce the intensity of your light. The fertilizer was never your issue. Your light intensity was and is the issue.
Just checked. No leaf is over 75 degrees atm
myke
Well-Known Member
This for RO water?
jonnynobody
Well-Known Member
After I experienced severe light burn with my 450w spider farmer board at full power in my 5x5 as I mentioned it was relocated to my flower room where it could be operated at full power over full grown mature ladies. When I shopped for a replacement I went with two 110w LED boards that spread the light, but still equal about 225w that I was able to operate the spider farmer board at without causing foliage damage. It worked out perfect. No foliage bleach / damage and I can operate them at full power without issue. These LED manufacturer's are great at making hardware. They fucking suck at telling you how to use them effectively. It's really no more complicated than that.
