Decided to try one pot, two plants. Larger one is an AK-48, with a really huge fan leaves the size of my palm. Small one is Northern lights, faulty seed, took a long time to germinate (full day later than AK-48) First time I grow more than one at the time.
AK is topped, NL is not.
Light - LED chips DIY: 180W 395nm UV + 300W full spectrum + 100W cool white ( power is variable, this is not maximum, but the power I run them on average ) + yesterday I installed side LED lamps 70W total.
Pot: 20-25l, with holes all throughout the sides.
Soil: peat + black earth.
Tent: 70x70 cm 150cm high.
It is day 48 since I started to germinate seeds, the 7th day in the 12-12h cycle. Invested 343 kWh in light and cooling/ventilation so far. Plants have been taken care of like babies only once I forgot to water them and they withered for a few hours. No bugs, really lucky grow.
2nd picture is main branch of NL, 5th picture is topped AK - splitting in two branches.