I found this site and it might have been posted before but it explains everything in a simpler way which I need since I'm learning as I go. Hope it helps you too.

GreenCoast Hydroponics - Hydroponic Nutrient, pH and Reservoir maintenance FAQ
Pinner Reviewed by Pinner on . For Newbes like me I found this site and it might have been posted before but it explains everything in a simpler way which I need since I'm learning as I go. Hope it helps you too. GreenCoast Hydroponics - Hydroponic Nutrient, pH and Reservoir maintenance FAQ Rating: 5