• PPM/TDS or EC of nutrient solution if applicable
• Indoor or Outdoor
• Light system
• Temps; Day, Night
• Humidity; Day, Night
• Ventilation system; Yes, No, Size
• AC, Humidifier, De-humidifier,
• Co2; Yes, No
If growing Hydro some additional questions:
-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution
Always try to upload a clear picture of any issues you may have to allow the community to assist you. Pictures taken under natural or white lighting are by far the best.
Add anything else you feel would help us give you a most informed answer should be included. Feel free to elaborate, but short and to the point questions and facts will help us help you in a more efficient manner.
• PH of Water, Solution, runoff (if Applicable): I set up an irrigation system, tested water in reservoir yesterday 6.2
• PPM/TDS or EC of nutrient solution if applicable: just ran slurry test: 5.7, not sure if I did it right, I tried doin 2:1 ratio with 29 grams of soil and 60ml of distilled water but it wasn’t wet enough, just looked like mud so I put in another 30ml to run the test
• Indoor or Outdoor: indoor
• Light system: SF1000d 24/7
• Temps; Day, Night hovers around 75
• Humidity; Day, Night: hovers around 65
• Ventilation system; Yes, No, Size: in-line fan with carbon filter, turns on when humidity is over 70
• AC, Humidifier, De-humidifier,: recently took out humidifier as the plant was big enough to keep humidity up
• Co2; Yes, No: no
@beachglass I haven’t tested run off, but will tonight after watering
Okay, I’ll switch to 18/6. Thought since it was auto it could take 24/7, also saw some posts of people doing 24/7 with autos and they looked good by the time they were ready to harvest so I was hoping I could do the same. All good though, I’ll switch to 18/6
@MidwestGuy@beachglass With the soil slurry coming back at 5.7 which isn’t to far out of the range is it safe to say the ppm is off? I don’t have a ppm meter, but will get one asap. She’s entering flowering so I imagine she’s taking in more nutrients. I want to give her some FoxFarm bush Doctor cal-mag that I have. If I just water with 6.5 ph water and test the runoff ph I feel it is going to be to late by next watering to give cal-mag.
@beachglass regarding the light wattage and yield, I’d be happy with 2oz dry, do you think with her size she could do that? If she survives
5.7 might seem not too far off, but in actuality is it way off and will cause significant problems. pH is measured on a logarithmic scale, so 5.7 is way off the mark.
On a log scale, a single point of 1.0 is actually a 10x difference. If effect, 5.7 is 5 times too acidic, not 0.5 times too acidic. A pH of 5.7 locks out all macronutrients. The plant is incapable of uptaking nitrogen, phosphorous, potassium, calcium, and magnesium at a pH of 5.7.
I see you are using FFOF. FF soils are pH buffered. FF soils will auto-correct to around 6.5 with a good flush. I expect that you have a low pH due to a fertilizer salt buildup (and therefore have PPM problems that need to be addressed.) Get a product like Sledgehammer and flush per the directions then run a few additional gallons of plain water through the pot to wash the Sledgehammer out. Sledgehammer is a wetting agent and you don’t want to leave it in your soil for optimal results. Check your pH in the final runoff. Only do pH adjustments if the pH is not somewhere between 6.3 and 6.8.
You need a PPM meter to avoid overfeeding or underfeeding. You should test runoff with a PPM meter and ensure PPM is maintained around 1,000, give or take a hundred or 2.
Be sure to pH adjust your feedings going forward. Mix your nutes, adjust the pH with a product I’ll link below, and test your runoff for both pH and PPM every time you water or feed.
Doing a flush will run your PPM down to around 250 - 300. Be sure to give a full feeding when the soil dries following the flush.
@Jonny420. Have patience my brother and get your ph level within tolerance…i believe that will help your plants health tremendously and get her back on track… this is one of my super skunk auto’s at day 24 … 1st pic was taken about 16hrs ago…
Thanks @MidwestGuy! When you say to flush with a couple of gallons of plain water after sledgehammer, can I use tap or should I use distilled? This is going to sound so dumb excuse the noobness, I haven’t read up on flushing. So we purposefully overfeed the shit out of her to get all sledgehammer out, after flushing do the leaves completely droop? After flushing do you HAVE to add nutes to get ppm back up to around 1000? In other words, will the ppm stay low after flushing and the only way to bring it back up is with nutes? How do you know which nutes to add to get back up to 1000? Thanks man