Serious Deficiency Issues

ManyClouds

ManyClouds

Well-Known Member
Hey RIU community, on my 4th run with Pineapple Express, Blue Dream & Dr. Grinspoon under (2) 600 watt HPS HIDs about 10-12 in from canopy w/ 60watts UVB lighting with one HPS light on 10 of the 12 hour cycle. Using Sunshine soiless mix w/ full fox farm line nutrients, using co2 at 1350 ppm at an average temp of 83 and humidity 52%, fresh carbon filtered air introduced every hour half or so, lots of circulation. Using PUR clear sink filter that DOES NOT ADD minerals but removes sediment and pharmaceuticals, pots are 4 gallons and only watering when pots are super light and dry,cultivating soil daily, feeding every other water during flower but a tad heavy during veg. Feedings are at 50% recommended dose with a PH i assumed was 6.2 my pen may have been off and usually is when I calibrate once a week with 7.0 solution. Its never been off more than 2 points, so the very lowest the PH could be was 5.8. The fox farm powdered nutes are about 1.5 years old while the liquids are about 5-6 months.
I've flushed w/ sledgehammer when deficiency first showed but nothing has helped. No gnats or bugs present, the girls are in week 5 now and started showing deficiency about 2 weeks into flowering. I was giving them a lot of Magnesium thru Tiger Bloom and Bud Candy for the Grinspoon / Blue Dream and Tiger Bloom Pineapple Rush for Pineapple Express. I flushed twice and the last time i flushed I used 6 gallons each of 25% fert solution with PH at 6.3. I foliar fed with CalMg several weeks ago with no avail.

Could it be a couple of my ferts are too old and may be messing with the root zone???

Im stumped and feel hopeless I have researched the shit out of this issue and feel I have a PH issue and led to CalMag deficiency with another type of lockout??? A ton of fan leaves already died and fell off, i have left on all growth until its completely dead. It seems the Pineapple Express is worse than the Blue Dream and the Dr G is not affected too much.Im in need of help, I cant find relevant threads to my issues. Can the girls get too much Magnesium??? How bad is the harvest gonna be affected???Im excited the Dr. G is okay so far. Any and all help welcomed. Thanks in advance for any help given!
 

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hexthat

hexthat

Well-Known Member
ManyClouds said:
Hey RIU community, on my 4th run with Pineapple Express, Blue Dream & Dr. Grinspoon under (2) 600 watt HPS HIDs about 10-12 in from canopy w/ 60watts UVB lighting with one HPS light on 10 of the 12 hour cycle. Using Sunshine soiless mix w/ full fox farm line nutrients, using co2 at 1350 ppm at an average temp of 83 and humidity 52%, fresh carbon filtered air introduced every hour half or so, lots of circulation. Using PUR clear sink filter that DOES NOT ADD minerals but removes sediment and pharmaceuticals, pots are 4 gallons and only watering when pots are super light and dry,cultivating soil daily, feeding every other water during flower but a tad heavy during veg. Feedings are at 50% recommended dose with a PH i assumed was 6.2 my pen may have been off and usually is when I calibrate once a week with 7.0 solution. Its never been off more than 2 points, so the very lowest the PH could be was 5.8. The fox farm powdered nutes are about 1.5 years old while the liquids are about 5-6 months.
I've flushed w/ sledgehammer when deficiency first showed but nothing has helped. No gnats or bugs present, the girls are in week 5 now and started showing deficiency about 2 weeks into flowering. I was giving them a lot of Magnesium thru Tiger Bloom and Bud Candy for the Grinspoon / Blue Dream and Tiger Bloom Pineapple Rush for Pineapple Express. I flushed twice and the last time i flushed I used 6 gallons each of 25% fert solution with PH at 6.3. I foliar fed with CalMg several weeks ago with no avail.

Could it be a couple of my ferts are too old and may be messing with the root zone???

Im stumped and feel hopeless I have researched the shit out of this issue and feel I have a PH issue and led to CalMag deficiency with another type of lockout??? A ton of fan leaves already died and fell off, i have left on all growth until its completely dead. It seems the Pineapple Express is worse than the Blue Dream and the Dr G is not affected too much.Im in need of help, I cant find relevant threads to my issues. Can the girls get too much Magnesium??? How bad is the harvest gonna be affected???Im excited the Dr. G is okay so far. Any and all help welcomed. Thanks in advance for any help given!
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1350ppm may be too high and ph of 6.2 is too low pH should be 6.5..You don't have too much or too little magnesium.
 
mathguy

mathguy

Member
So your plants have been DEFICIENT of nutrients and thus far you have flushed them more than once but haven't increased the nutrient regimen? You flush when you have a toxicity, increase the proper nutrients when you have a deficiency. If flushing did not help then you really have only ruled out the toxicity - although you seemed to have flushed then continued with the same nutrient regimen. That's textbook "insanity" right there. Seems like you just haven't found what they want yet. I would certainly not say it's too much CO2 and yeah maybe you could bump the pH up a bit.

I'm too new to specifically identify your problem but as my understanding of the plant goes you haven't attacked your issue in what I feel is the most logical way! Best of luck!
 
ManyClouds

ManyClouds

Well-Known Member
Thanks for the quick info guys, insanity is correct! The first flush was h2o+sledgehammer, second with ferts (technique from another thread) about two weeks apart, my main question is the nutes... Can they go bad and f with the root zones ability to absorb other nutes aka lockout? Im afraid to feed heavy in anticipation of furthering this lockout so close to bulk time. Again i am throwing out the nutes that are 2 years old, could that be a variable?
 
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