Thanks for replies guys!
Cant upload px for some reason. When it was up to 1800ppm I had the following in the rez: Hydro Vega A/B 3ml/litre, Rhizo 2ml/L, Cannazym 2.5ml/L, Boost 2ml/L, CalMag 0.5ml/L and a tablespoon of Epsom Salts.
Temps 85°, RH 35. And heres something wierd pph has risen from...