These two plants were just switched from a bubbler into a RDWC system I built a few days ago and can't figure out what's going on. This is my 2nd grow and first attempt at hydro. Along with transferring into the RDWC I switched lighting from 18/6 to 12/12 on Saturday (they were vegged for 42 days). One is Gods Gift and the other is Aurora. The leafs on the Gods Gift are yellowing and the leaf tips are curling down. The Aurora is also starting to yellow, leaf tips are starting to curl down slightly, and one of the leafs has twisted. Its a 3 bucket RDWC system using 5-gallon buckets, one is a control bucket, hooked together with 2" pvc and a 3/4" return line with a 382 gph inline pump set at 15 on / 15 off. There's currently about 10-12 gallons total.
Room Size: 5x7
Lighting: 1000w hps on 12/12 (20" above canopy)
Nutes: FloraNova Series following GH feed schedule
PPM: 1100 (2.5ml grow; 2.5ml bloom; 1ml Rapid Start; 1ml Floralicious; 1ml Superthrive)
*PH: Range from 5.6 - 5.9
Water Temp: 64 - 74 (using frozen water bottles and typically staying around 70)
Air Pump: 110 lpm
Room Temp: 63 - 77
RH: 35% - 55%
Ventilation: 435 cfm fan dialed down to about 25-30%
The only problem I've had has been with my PH meter so I'm thinking this may be a PH problem. My Nutradip Tri-Meter started giving me erratic readings out of nowhere the other night, so I went and bought a cheap PH pen, but I don't know how accurate the pen is. I think I fixed the tri-meter but the odd thing is that when both meters are calibrated the pen reads 0.4 - 0.5 higher than the tri-meter, consistently. I don't know which meter to trust. I think the tri-meter is giving me the correct readings and the PH range I listed above is based on the tri-meter readings.
Gods Gift - Yellowing Leaves and Leaf Tips Curling/Hooking Down:
Aurora - Yellowing Leaves - Leaf tips Curling/Hooking slightly - Twisted Leaf:
The twisted leaf is the only one on this plant that has done that, but in general, all the new growth on these plants look light green/yellow and look weak (i.e., thin and under-developed for lack of a better word). Any help, opinions, or suggestions is greatly appreciated.
Thank you!!
Room Size: 5x7
Lighting: 1000w hps on 12/12 (20" above canopy)
Nutes: FloraNova Series following GH feed schedule
PPM: 1100 (2.5ml grow; 2.5ml bloom; 1ml Rapid Start; 1ml Floralicious; 1ml Superthrive)
*PH: Range from 5.6 - 5.9
Water Temp: 64 - 74 (using frozen water bottles and typically staying around 70)
Air Pump: 110 lpm
Room Temp: 63 - 77
RH: 35% - 55%
Ventilation: 435 cfm fan dialed down to about 25-30%
The only problem I've had has been with my PH meter so I'm thinking this may be a PH problem. My Nutradip Tri-Meter started giving me erratic readings out of nowhere the other night, so I went and bought a cheap PH pen, but I don't know how accurate the pen is. I think I fixed the tri-meter but the odd thing is that when both meters are calibrated the pen reads 0.4 - 0.5 higher than the tri-meter, consistently. I don't know which meter to trust. I think the tri-meter is giving me the correct readings and the PH range I listed above is based on the tri-meter readings.
Gods Gift - Yellowing Leaves and Leaf Tips Curling/Hooking Down:
Aurora - Yellowing Leaves - Leaf tips Curling/Hooking slightly - Twisted Leaf:
The twisted leaf is the only one on this plant that has done that, but in general, all the new growth on these plants look light green/yellow and look weak (i.e., thin and under-developed for lack of a better word). Any help, opinions, or suggestions is greatly appreciated.
Thank you!!