Nice grow it looks good. But did you ever notice after a farmer grows and harvests their crops they don't dig up the soil and throw it away. I can assure you that if you have made your soil a supersoil as you call it will support multiple grows without more amendments. After a few grows it may need something. You develop a feel for it. Get yourself a dirt box anything will do plastic tub etc. dump your pots, mix and reuse. Remember to take care of the soil in the dirt box too. Old plant root systems are good for the dirt. Happy growing.
Also, my white light cob always stays lit 24/7 and I never worry about veg/bloom. Better ask Mars Hydro whats up with that.