Hi.
I'm new to growing cannabis and decided to just get straight into hydro because i like a challenge... With my swinging PH levels i'm starting to doubt that decision...
I wanted to start off small so i'm rolling with a 90L/h airpump in a container with 4L of nutrient solution Ph to 5.5.
From the very beginning i have been battling with rising Ph levels. The Ph would rise to 7-8 over night or while i was at work. I would then Ph it down to 5.5 again and the solution would rise again. I've replaced the nutrient solution 3 times. The last time i tried adding some hydrogen peroxide(3%, 3mL pr. 1L) to combat what i thought was root rot. 24h later the water still looks clear, no smell to it and the Ph has risen to 7-8 again...
I soaked my rockwool and hydroton in 5.5Ph water for 12h before putting them to use and i'm not dripping or running water through either of them, so i don't believe they are the cause of the Ph rise.
I just measured my water temps to 23C (74F) and below are temp(left) and humidity(right) graphs of the last 24h.
Nutrients:
Plant, roots and water (I believe the browning of the leaf is my fault. Left the lamps a bit too close):
I'm new to growing cannabis and decided to just get straight into hydro because i like a challenge... With my swinging PH levels i'm starting to doubt that decision...
I wanted to start off small so i'm rolling with a 90L/h airpump in a container with 4L of nutrient solution Ph to 5.5.
From the very beginning i have been battling with rising Ph levels. The Ph would rise to 7-8 over night or while i was at work. I would then Ph it down to 5.5 again and the solution would rise again. I've replaced the nutrient solution 3 times. The last time i tried adding some hydrogen peroxide(3%, 3mL pr. 1L) to combat what i thought was root rot. 24h later the water still looks clear, no smell to it and the Ph has risen to 7-8 again...
I soaked my rockwool and hydroton in 5.5Ph water for 12h before putting them to use and i'm not dripping or running water through either of them, so i don't believe they are the cause of the Ph rise.
I just measured my water temps to 23C (74F) and below are temp(left) and humidity(right) graphs of the last 24h.
Nutrients:
Plant, roots and water (I believe the browning of the leaf is my fault. Left the lamps a bit too close):