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Low EC in run off

1

109Loblolly

New member
Hello,
Just wondering if anyone has run into this before. I’m in the second week of flower (mimosa shot), my nutrient mix is at 1.1EC yet the run off is 0.9. pH us between 5.7 and 6.1 on any given day. Growing in coco/perlite watering by hand. The other mimosa shot’s are having the same white tip issues but the run off is around 1.1 EC at the moment. Using Flora Series by General Hydroponics in early bloom. Any input would be appreciated. I’ve looked on line at a few different sites such as THC farmer but get conflicting answers…Thanks!
 

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I'd be upping the EC at that stage. I'm not familiar with growing that strain but white tips indicate a deficiency. I'd also up your pH depending on a few things. What is your pH of the nute mix?
 
What kind of water do you use? Do you account for what's in it before you add the nutes? I use tap water that consistently stays at .34EC before I add nutes. Just a thought for you. 1.1 EC might be kinda low. I think your PH is good. Is that the range for your nutrient solution or the runoff? I think Nebula has a feed schedule for the flora series over on the GWE site. Check it out.
 
Just a little tidbit - a little bit of tip burn isn't always a bad thing. Many growers would suggest that a touch of tip burn actually means that you're pushing them the right amount. Others would say that if there is any tip burn, you're pushing them too hard. My suggestion would be if that's the only thing you see as a 'problem' in your grow and it's not spreading, leave it be. Watching and waiting is often the most beneficial course.
 
Thanks for the input everyone. The water is filtered (EC 0), the pH range I listed is for the nutrient mix. That is interesting about upping the strength of the mix, that was on my mind too. I’ve always read that yellow tips are a sign of nutrient burn, either from the mix is too strong or the water has transpired leaving an excessive accumulation of salts which negates checking the pH of the run off (because it will be high and out of spec). The tips of the Mimosa’s are white, not yellow and I haven’t found any references regarding white tips regarding nutrient deficiencies. I haven’t heard of the possibility of too few nutrients. Thanks again you guys for the help! Apart from the white tips and lower EC in the run off the plants are all looking very vibrant and healthy.
 

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Your plants in flower so I wouldn't let the pH go below 6 in coco...6.2 to 6.3 is probably ideal. An EC of 1.1 is very low in early flower. Id be looking for 1.4 to 1.6 and raising it a bit until the last couple of weeks.. the seed supplier should be able to give you some numbers on that.
Brown tips are nute burn...ive never seen them go from yellow to white to brown....whitish yellowish tips is a deficiency but I can't remember which
 
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