I'm going to buy a ph test kit very soon. The CFL's are 100W replacements (run at 23W though). I was thinking 6 2700K CFL's would be enough? How many would you recommend? I use tap water and mix 1/4 dosage of the Liquid Miracle Grow in and water with that every 2-3 days. The bottle says use the miracle grow once every 2 weeks... I only use my mix (water + 1/4 dose of miracle grow).. should I be using normal tap water the rest of the time? I was avoiding bottled water because they add sodium and stuff which I thought was bad.