Smokeman710
Member
Ok guys I’m having some trouble in my grow room and I can’t seem to figure out what’s going on. The plants look heat burned, nitrogen toxic with twisted new growth and dark green almost waxy looking lower fans. New sugar leaves are twisted. Plant is really fragile, small breeze makes white hairs turn orange. This hasn’t happened in the past. It’s clearly weak right now.
I’m running coco dtw system. 2 gal pots. 50%coco 50%perilite. Watering to 20% runoff 5 times a day. Currently feeding at 700-800ppms. Which is a drop from 1000 during stretch. I just introduced my flower nutes high in P and K about a 2 weeks ago and have been gradually backing off the nitrogen. I’m 40 days into flower. This strain normally takes off at this time. The summer heat just let up so my ac hasn’t been running as much in the grow room and the air has been getting drier. I introduced my humidifier and have been messing with the vpd trying to get everything in range with the changing humidity. The plants seemed to be suffering and I assumed it was because it was getting too dry in the grow room. I have had everything dialed in for the last 3 days and the problems have actually gotten worse.
I decided to do some runoff checks.Run off ppms we’re 800-900. Totally in range. (I check this weekly and if they are 300ppms over input , I do a light flush and either back off nutrient strength or increase runoff. So, in my mind my nutrients aren’t too high. So just for shits and giggles I check the runoff ph. This is where I see the problem. It’s 4.7. Input is 5.8-6.2 btw. So i decide to do a major flush. I put 5 gallons of a diluted nutrient solution through and the ph doesn’t raise but the ppms dropped to exactly the input solution. So I decide to use plain tap water ph’d to 6.3. My ppms of my tap are 220-270(hard water, but never need to add calmag lol). I put another 5 gallons of water through and the runoff ph raises to 5.0 but won’t go higher. I decide to let the plants dry out over night and check in the am. Right before I go to bed I remember I have a freaking blue labs soil ph pen. So I run down and check the soil ph with that. It reads 6.1. So then I run some more water through and check runoff ph again. Still 5.0. How can this be? ALL EQUIPMENT IS CALIBRATED.First thing I do when something is off is recalibrate. The only thing I can think of is that i am suffocating my plants and they aren’t able to take up enough nutrients because they are being over watered. But everyone swears you can’t over water coco. And on top of that I’m running a 50/50 coco perlite mix. So what’s the deal here? Should I go buy a leaching agent to help leach any left over salts? I don’t understand how there can be any left cus my runoff ppms are below 500 now. Is it possible my bloom nutrients could go bad? I’m running a powder and there is definitely a tiny bit of moisture that has leaked into the bag Causing some clumps but nothing crazy. I’m running hydroponic research veg plus bloom and shine. Also I add hydro guard to my reservoir to help keep bacteria and all the nasties out.
I’m running coco dtw system. 2 gal pots. 50%coco 50%perilite. Watering to 20% runoff 5 times a day. Currently feeding at 700-800ppms. Which is a drop from 1000 during stretch. I just introduced my flower nutes high in P and K about a 2 weeks ago and have been gradually backing off the nitrogen. I’m 40 days into flower. This strain normally takes off at this time. The summer heat just let up so my ac hasn’t been running as much in the grow room and the air has been getting drier. I introduced my humidifier and have been messing with the vpd trying to get everything in range with the changing humidity. The plants seemed to be suffering and I assumed it was because it was getting too dry in the grow room. I have had everything dialed in for the last 3 days and the problems have actually gotten worse.
I decided to do some runoff checks.Run off ppms we’re 800-900. Totally in range. (I check this weekly and if they are 300ppms over input , I do a light flush and either back off nutrient strength or increase runoff. So, in my mind my nutrients aren’t too high. So just for shits and giggles I check the runoff ph. This is where I see the problem. It’s 4.7. Input is 5.8-6.2 btw. So i decide to do a major flush. I put 5 gallons of a diluted nutrient solution through and the ph doesn’t raise but the ppms dropped to exactly the input solution. So I decide to use plain tap water ph’d to 6.3. My ppms of my tap are 220-270(hard water, but never need to add calmag lol). I put another 5 gallons of water through and the runoff ph raises to 5.0 but won’t go higher. I decide to let the plants dry out over night and check in the am. Right before I go to bed I remember I have a freaking blue labs soil ph pen. So I run down and check the soil ph with that. It reads 6.1. So then I run some more water through and check runoff ph again. Still 5.0. How can this be? ALL EQUIPMENT IS CALIBRATED.First thing I do when something is off is recalibrate. The only thing I can think of is that i am suffocating my plants and they aren’t able to take up enough nutrients because they are being over watered. But everyone swears you can’t over water coco. And on top of that I’m running a 50/50 coco perlite mix. So what’s the deal here? Should I go buy a leaching agent to help leach any left over salts? I don’t understand how there can be any left cus my runoff ppms are below 500 now. Is it possible my bloom nutrients could go bad? I’m running a powder and there is definitely a tiny bit of moisture that has leaked into the bag Causing some clumps but nothing crazy. I’m running hydroponic research veg plus bloom and shine. Also I add hydro guard to my reservoir to help keep bacteria and all the nasties out.
