LiberalThinker
Well-Known Member
Thought I'd start recording what I'm doing.
Equipment:
T5's (germination), HPS and 315w CMH. 70L DWC with the plant in a Root Riot cube and Hydroton. Nutes are GH Flora Trio with seaweed extract and silica additives. pH down is nitric acid for veg and phosphoric acid for flower. I don't use pH up. I'm using bacterial and mychorrizal additives. 4 x 4 x 72 tent but the scrog space will be 1 metre square.
Method:
I treat the water with ascorbic acid for dechlorination, add silica, then drop the pH to about 5 with nitric acid for veg then add the nutes. The initial pH will be about 5.5, which is my target and recommended by GHS for WR. I let the pH ride up to 6ish during the grow before bringing it back down again. I'll spray once a week with an Epsom, MKP, calcium EDTA mix. I will measure ppm's and top up with water if it's too high and redo the tank when ppm drops 25%. I shall use a citric acid/potassium carbonate buffer to stabilise pH.
Initially, for the first couple of weeks, the plant was on an 18/6 but have decided to use the Gaslight schedule, which is a 12/12 with a one hour light interruption in the middle of the plant's night. I'm currently just hand watering until the 4-way branching is established and then it will go into the DWC with the scrog set up. These are the first pictures:
At 7 days:
At 17 days:
At 20 days I've topped it. I forgot to take a picture before this was done. There was two more sets above the cut:
It's been under 250w Philips HPS but from tomorrow should start under the CMH. When the plant is under the light the side of the pot and top is covered with light proof plastic so the roots can spread to the edge and keep the humidity high in the pot.
Equipment:
T5's (germination), HPS and 315w CMH. 70L DWC with the plant in a Root Riot cube and Hydroton. Nutes are GH Flora Trio with seaweed extract and silica additives. pH down is nitric acid for veg and phosphoric acid for flower. I don't use pH up. I'm using bacterial and mychorrizal additives. 4 x 4 x 72 tent but the scrog space will be 1 metre square.
Method:
I treat the water with ascorbic acid for dechlorination, add silica, then drop the pH to about 5 with nitric acid for veg then add the nutes. The initial pH will be about 5.5, which is my target and recommended by GHS for WR. I let the pH ride up to 6ish during the grow before bringing it back down again. I'll spray once a week with an Epsom, MKP, calcium EDTA mix. I will measure ppm's and top up with water if it's too high and redo the tank when ppm drops 25%. I shall use a citric acid/potassium carbonate buffer to stabilise pH.
Initially, for the first couple of weeks, the plant was on an 18/6 but have decided to use the Gaslight schedule, which is a 12/12 with a one hour light interruption in the middle of the plant's night. I'm currently just hand watering until the 4-way branching is established and then it will go into the DWC with the scrog set up. These are the first pictures:
At 7 days:
At 17 days:
At 20 days I've topped it. I forgot to take a picture before this was done. There was two more sets above the cut:
It's been under 250w Philips HPS but from tomorrow should start under the CMH. When the plant is under the light the side of the pot and top is covered with light proof plastic so the roots can spread to the edge and keep the humidity high in the pot.
