this is my first grow I do not have a timer on this system I have a timer on the lights. I am replaccing the water and nurtients every week and a half. I am not to knowledged with general hydroponics nutrients so I used a half a table spoon of the micro and veg to every gallon of water. I have not used the bloom nutrients as I am not in that phase yet. I know that the air circulation is not the greatest. What should I do?