No it isn't! get rid of that fert now! better to use normal tap water. You need to buy a fert for veg growth 20-20-20 will do, miracle grow patio or rapid grow have trace minerals and will do the job well. Then for flowering use something like Peter's 5-50-17 even a 15-30-15 will do the business, but whatever, STOP using your present fert and flush with water now. good luck