Yes I work for a company that uses organic extracts in our formula :) I actually use a similar system to this being the Autopot Auto5 System. Why they advise you cant use organic nutrients is that the organic compounds used in organics nutrients can leave residue and this residue can build up overtime blocking pipes and stuff. Your system seems to be a stand alone and not connect to any type of reservoir which is usually the case with these types of systems so they can run automosley for long periods of time your is limited to the size of the reservoir in the actual pot. Water ph is very important to us growers though there are nutrients lines out there like ours that are ph stable. Eliminating the need for EC or PH meters. Though if you want to be certain which we always advise get yourself an ec and ph meter and check your pot regularly note down any changes or fluctuations to compare to your next grow so you can optimize growth and mix nutrients easier. what i would suggest keep the system clean and check the ec and ph every other day until your confident its not going up or down too much.