So it's almost the end of week 3 of veg for these girls, and they have been having a rough time. Here's the setup - RDWC DIY undercurrent under 1000 watt MH in a tent. Sprouted from seed into rockwool then moved the rockwool into hydroton net pots. Feeding with Current Culture line: Veg A B, Roots, and Cal-Mag since i'm running RO.
I have been having a battle with some minor root rot since week 2. I didn't have a chiller when they first went in so they saw water temps of up to 75 F for a week or so, and I started to notice a stink like a locker room when I'd open the containers and rez. Figured from what I've read, it had to be the dreaded pythium. I've had the chiller on for the past week and temps are holding between 65 and 68 now. I did a full flush(the first one) last weekend, and upped the nutes to week 3 strength but i'm still seeing some brown roots and stunted growth. During week 2 I was regularly adding UC Roots every other day at 3ml per gallon to try to fight the minor browning and smell I was seeing in the roots. My ph has been erratic, with a drop overall instead of the usual rise, throughout the day it varys up and down by .1 -.3 dropping an average of .4 overall each day. The ppm has not done much at all the entire grow so far. I've kept on the recommended schedule, 150 - week 1, 200 - week 2, 250 - week 3(current). I have only seen a variation of maybe 5 PPM tops except when upping the nutes, sometimes rising 1 or 2 points in a day instead of dropping. This means they're not eating correct?
Three days ago I added a heavy amount(10ml per gallon) of 3% H2o2 since I wasn't seeing any results from the UC roots alone. Within 2 hours I returned to see light green blotches forming on the lower fan leaves of two of the plants. Overnight they turned into yellow spots, and the leaf tips curled and dried to a crumble. It's been progressively worsening and i'm statrting to see small spots that look similar to cal deficiency on the upper leaves too. I've never heard of H2o2 having an effect like this but it would be a very odd coincidence for something else to pop up that quickly, right after I added it. I have still been adding 3ml per gallon of H2o2 per day since then, it seemed to brighten up the roots and I saw no negative results on any of the others so I figured why not? The spotting has slowly been getting worse on the effected girls, and the growth both from the shoot and the roots seems to have stunted altogether. The whole batch(pineapple express) seems very short with very little root growth for the age. This is my first time with a UC type system so I am not sure what to expect.
The roots don't look all that bad, and the smell seems to be diminishing with the use of H2o2 so I'm continuing with it unless told otherwise. I have another system of the exact same setup that had similar rot issues(not as bad as this one) and they have fully recovered now dropping an immense amount of new root growth, where I see no new root growth in the system in question. I treated it the same way as this one, with H2o2, just without the initial 400ml blast, just 3ml per gallon daily doses. Sorry I know it's a length story, I just don't want to be misdiagnosed and cause more damage. I'm overwhelmed and confused and have searched til my eyes hurt, some DWC guru please bring me a solution to my dilemma!
Main Points:
Yellow spots spreading, leaves dying
Roots slightly brown/smell/very few and no new growth
Plants overall very short and stunted
Ph dropping instead of rising
PPMs not moving
Heres some pics of the spots and roots as they progressed. The last pic is an unaffected one in the same system for comparison, still small and wilty for halfway through week 3 right?
I have been having a battle with some minor root rot since week 2. I didn't have a chiller when they first went in so they saw water temps of up to 75 F for a week or so, and I started to notice a stink like a locker room when I'd open the containers and rez. Figured from what I've read, it had to be the dreaded pythium. I've had the chiller on for the past week and temps are holding between 65 and 68 now. I did a full flush(the first one) last weekend, and upped the nutes to week 3 strength but i'm still seeing some brown roots and stunted growth. During week 2 I was regularly adding UC Roots every other day at 3ml per gallon to try to fight the minor browning and smell I was seeing in the roots. My ph has been erratic, with a drop overall instead of the usual rise, throughout the day it varys up and down by .1 -.3 dropping an average of .4 overall each day. The ppm has not done much at all the entire grow so far. I've kept on the recommended schedule, 150 - week 1, 200 - week 2, 250 - week 3(current). I have only seen a variation of maybe 5 PPM tops except when upping the nutes, sometimes rising 1 or 2 points in a day instead of dropping. This means they're not eating correct?
Three days ago I added a heavy amount(10ml per gallon) of 3% H2o2 since I wasn't seeing any results from the UC roots alone. Within 2 hours I returned to see light green blotches forming on the lower fan leaves of two of the plants. Overnight they turned into yellow spots, and the leaf tips curled and dried to a crumble. It's been progressively worsening and i'm statrting to see small spots that look similar to cal deficiency on the upper leaves too. I've never heard of H2o2 having an effect like this but it would be a very odd coincidence for something else to pop up that quickly, right after I added it. I have still been adding 3ml per gallon of H2o2 per day since then, it seemed to brighten up the roots and I saw no negative results on any of the others so I figured why not? The spotting has slowly been getting worse on the effected girls, and the growth both from the shoot and the roots seems to have stunted altogether. The whole batch(pineapple express) seems very short with very little root growth for the age. This is my first time with a UC type system so I am not sure what to expect.
The roots don't look all that bad, and the smell seems to be diminishing with the use of H2o2 so I'm continuing with it unless told otherwise. I have another system of the exact same setup that had similar rot issues(not as bad as this one) and they have fully recovered now dropping an immense amount of new root growth, where I see no new root growth in the system in question. I treated it the same way as this one, with H2o2, just without the initial 400ml blast, just 3ml per gallon daily doses. Sorry I know it's a length story, I just don't want to be misdiagnosed and cause more damage. I'm overwhelmed and confused and have searched til my eyes hurt, some DWC guru please bring me a solution to my dilemma!
Main Points:
Yellow spots spreading, leaves dying
Roots slightly brown/smell/very few and no new growth
Plants overall very short and stunted
Ph dropping instead of rising
PPMs not moving
Heres some pics of the spots and roots as they progressed. The last pic is an unaffected one in the same system for comparison, still small and wilty for halfway through week 3 right?
lol but yeah i'm ordering the ingredients for the tea now. Going to treat both systems even though the one is starting to look better, can't hurt right? I'm going to do a flush and h2o2 cleaning tomorrow while I wait for the tea stuff to get here.
