no no no no, when i switched it to twelve and twelve for 2 weeks i switched it to the hps its been the mh 400w for all of the vegetative 18-6 and thats not the ph of the solution its the ph of the water, the tablespoon of pureblend is was bringing my ph down to about 6 with my hydro bucket so i figure it should be good, and im not sure about the leafage