Yet one more soil thread

I attempt to do my very own analysis however after utilizing lava cut up/grit final time and this apparently being not the perfect alternative for citrus, I needed to verify to make an excellent combine this time. Particularly as a result of I will be repotting 50 or so vegetation.

What I’ve round in the meanwhile is:
– Coarse perlite 2 – 6 mm 
– COMPO Bio Potting soil – Additional mild (pic: backside proper)
– Pine bark mulch 10 – 25mm (pic: backside left)
– Coco husk mulch – compressed blocks – (pic: prime left)
– 100% Coco potting soil – compressed blocks – (pic: prime proper)

Pot sizes: 20 – 30 cm
Local weather: Belgium
Winter: outdoor (moist)
Summer season: scorching rooftop
Rootstock: largely Poncirus, few C4475

For the coco merchandise I hear about an issue with salt. Some say it is high-quality, some say to rinse it with water, some say to rinse it with sure merchandise… Is it definitely worth the effort or higher to make use of one thing else…

I am solely in my second yr rising citrus so I hope I can get some recommendation from individuals with a bit of extra expertise