Help! DWC Grow...Pineapple Chunk Leaves curling Upward

[nasteman]

Help! Help! My DWC grow pineapple chunk is healthy, growing good but the new growth and leaves prior all are curling upward lengthwise like I was rolling a blunt Am using GH nutrients, micro and grow. PH set to 5.8-5.9, PPM 340, using filtered water with temp at 63 degrees. Roots also look healthy and growing well. I've tried cal/mag and silica too but there was still no change in the new growth. Can anyone direct me in the right direction?

 

[topfuel29]

Yes curling tip upwards could be a sign of Magnesium deficiency
Your starving your plant. Bring up your PPM's
Your nutrient solution is to cold. this could be locking out nutrients.
Run the pH range, low to high. ph down after pH rebound
This is from GH "Temperature of the nutrient solution should be in the range of 65 to 80 degrees Fahrenheit (18 to 26 degrees Celsius)."
http://generalhydroponics.com/site/index.php/resources/faqs/questions_about_water/

 

[nasteman]

Help! Help! My DWC grow pineapple chunk is healthy, growing good but the new growth and leaves prior all are curling upward lengthwise like I was rolling a blunt Am using GH nutrients, micro and grow. PH set to 5.8-5.9, PPM 340, using filtered water with temp at 63 degrees. Roots also look healthy and growing well. I've tried cal/mag and silica too but there was still no change in the new growth. Can anyone direct me in the right direction?

Man thanks...for the reply and insight!! I changed the solution....PPM pushed up to 880, PH is 6.1 and the water temp is 75 degrees. Using GH Grow and Micro with Silica Blast and Cal/Mag added also. I also forgot to let you know I was using CFL Lighting...4 foot 4 bulb setup, 20,000 Lumens 1 foot above the plant. I'll monitor this very closely for the next week to see how she reacts cause this isn't my first grow but it definitely is the most problems I've had in 3 years. Thanks again!!!

 

[Malevolence]

Keep your water temp below 70* in DWC unless you're running bennies.