Day 21 of flower today! So I've been running 2.3 EC on my feeds, being:
RO water - 3ml/Litre of Silica, allow to dissolve as long ap, at least 20 mins
pH down to 6.0-6.4
Calmag 2ml/litre
Canna A 3ml/litre
Fulvic 1ml/litre
Canna B 3ml/litre
PK 1.5 ml/litre
Cannazym 2.5 ml/litre
Biodiesel (batshit and stuff) 4ml/litre
Have the lights sitting at 16" from canopy (2x
Mars Hydro TSL 2000, total 600W, 4x4 tent), getting 1250 PPFD at the highest tops, most of the canopy top below is getting 800+, most of it 900-950. That is obviously pushing them pretty hard, I haven't tested the CO2 in there but it's a very small room that is exhausted on a 4" and has filtered air coming in through the air conditioning system, so perhaps they are getting all the CO2 they need. All I know is they are loving it.
Run off EC has just hit 2.7 today so I'd say judging by their little dance they are just where they want to be for light and nutes. pH couldn't be better, 6.0 in, 6.2 out every time. I can't take the pots out of the drainage pots because net and irrigation, but I suspect these have killer roots through the bottom and into the drain reservoir. They are air pruning, I get little bits in the runoff but they are always white and not rotted. The EC will come down a little, I've had to go from 5 litres a day across the tent getting 20% back, to giving 12 litres today and getting just over 10% back. Will have to stay on top of their increasing need and make sure plenty of run off to keep that getting away from me.
Keeping eye out for light stress, but I'd be more worried if they were turning away from the lights. No curling or canoeing. All I know is I plucked a stringy leaf from a node just above the net and got a bit of contact with the bud. My fingers smelled like pine and key lime pie. I'm really happy with node spacing, I deliberately increased diurnal range as soon as I was finished filling out the net to promote increased spacing above the net. Should help with rot and mould prevention. I still think those tight bunches at the top should give killer colas. To reiterate I'm calling a pound dried flowers as a pass mark for first grow
Let me know if I'm missing anything, otherwise enjoy photos of happy flower girls