Evening folks, growing in an IWS - flood and drain, feeding Advanced nutrients A & B with B52 and Hydroguard,, 1.6 and a 6.0 ph,, under 400w bulbs on an 18/6 ,,room temp is 24/26 with 50/60 rh,,
Plants are 4 weeks from seed and being fed 3 times a day,,
All looking lovely until a couple of days...