What is the best rootstock for potted citrus.
The soil would be peat/coconut fiber/clay rock/perlite 6-6.5 pH.
Tap water with chlorine 20ppm, medium hard 6.9°dH 'German degrees'
Summer temperature 25-35°C (77-95), winter 5-10°C (41-50 F)
Final pot 50L (13gallon)
Poncirus trifoliate would be the first candidate. What I don't like about it, it's a slow grower and makes little fruits.