Hey fellow growers, does anyone have an idea why my Radicchio looks so bad?
The leaves started to turn brown about 4 weeks after i put my seedlings into their setup, before, everything grew nicely.
Setup:
Room Temperature ~23-26 degrees celsius or about 77 deg. Fahrenheit at ~40-60% RH
Kratky method, roots are about 50% emersed
Tap water with high ph and medium hardness (sorry, no exact values)
Fertilizer: https://www.lechuza.co.uk/accessories-fertilisers-plant-care/slow-release-fertiliser-perfect-veggie-150-g/19602.html#cgid=Zubehoer
(long term fertzilizer with ion exchange i guess, used about 3g/l, 24g for 8l in total)
Lighting: 12h/day with an aquarium light with ~5400lm, 6500k+9000k
Any help would be appreciated
by k0tmieser