16/03/22 Refill 4L, and add nutrients in recommended proportions (except a bit more Flora Bloom, and a bit less Flora Grow) I set the EC at 1.75 and pH was at 6.
14/03/22 I did a gentle defoliation
12/03/22 Refill 4L, and add nutrients in recommended proportions (except a bit more Flora Bloom, and a bit less Flora Grow) I'll stay at EC 1.65 this time and pH was at 6. Lately I don't have really to adjust pH, may be PH Down 1ml for 12L of bottom tank to drop 6.1 to 5.9 every 4 days.