Hi all,
I've started some new seedlings. They're about 23 days old. They seem to be growing very slowly and 1 has started to show signs of possible PH issues. The PH was at 5.6 and 0.5ec for a week and I then brought it up to 6.0. I left it at 6 for another week (it didn't move) so I decided to bump up the EC to 0.6 and lower the PH to 5.7. After I brought it down and upped the EC, I started to notice these brown marks on the lower leaves. I googled and the pics I could find pointed to a drastic PH shift. This is my 4th grow and I haven't seen this before regarding the PH. I was wondering if I've been impatient and just overfed or is it something else. 3 other plants in the system and none of the others have any browning but one has (maybe) the claw but isn't dark green at all. All roots are white and healthy.
Any help would be great
RDWC
4 20lt bucket +1control
Fluming in control
Room is 25c during the day and 19-20c at night.
QB 132x4 3500K (1 over each plant) @ 200w total
Light height is uMol 400
Nutes temp is ambient. Beneficial bacteria (great white)
1 fan and filter (on every 2h for exchange)
1 Oscillating fan on 24h (not blowing on plants)
I've started some new seedlings. They're about 23 days old. They seem to be growing very slowly and 1 has started to show signs of possible PH issues. The PH was at 5.6 and 0.5ec for a week and I then brought it up to 6.0. I left it at 6 for another week (it didn't move) so I decided to bump up the EC to 0.6 and lower the PH to 5.7. After I brought it down and upped the EC, I started to notice these brown marks on the lower leaves. I googled and the pics I could find pointed to a drastic PH shift. This is my 4th grow and I haven't seen this before regarding the PH. I was wondering if I've been impatient and just overfed or is it something else. 3 other plants in the system and none of the others have any browning but one has (maybe) the claw but isn't dark green at all. All roots are white and healthy.
Any help would be great
RDWC
4 20lt bucket +1control
Fluming in control
Room is 25c during the day and 19-20c at night.
QB 132x4 3500K (1 over each plant) @ 200w total
Light height is uMol 400
Nutes temp is ambient. Beneficial bacteria (great white)
1 fan and filter (on every 2h for exchange)
1 Oscillating fan on 24h (not blowing on plants)