As Icky explained above with too large a container OR too fast a feed flow , what happens is some of the rootzone will develop compaction and form "dry" pockets that juice `ll never get to and go around with the DTW process.......and.....
Residual salt buildup will form a crust around those dry pockets with time and guaranteed cause imbalances and lockouts at some point in the game.
Ptone how often are you watering?
quality thread. should i go full coco or add 20% perlite if going with 2g smart pots DTW dripper system thingy?
after a bit of reading on here i am going too try the the plant magic coco & nutrients just need advise on a ph meter Peace Dank420uk
2 gallon SP's, I'd advise full coco. Once roots fill out, I've noticed plants in 2gSP's suck the pot dry after a day (under a 1k)
But honestly, it depends on your preferred watering method (hand or by drippers) & how much time you have to spend in your garden.
That hydrolite looks good, shame can't get any in the UK.
you can mate but i forgot the name im sure it began with a d ive seen that medium before over here its silica based too similar bag but not botanicare unless they bought the company
edit
its called diahydro pal
peace
Ptone how often are you watering?