"Topping "RO" water on Rockwool cubes in Grow Box"
by Gerard Carisio
(Chula Vista, Ca, USA)
After topping "RO" water on net pots that contains seedlings in Rockwool for one week. Should they be topped with water throughout the grow ctcle? I understand that the roots are continually watered below the Rockwool. Thanks for any help, Gerry