Hi GpsFrontier,
I want to thank you for spending so much of your time to help me, thank you.
My current location is at Malaysia, or to be exact Borneo Island. Perhaps MH370 flight incident will give you clearer idea where i am now. LOL!!
My tap water comes from water treatment plant. Maybe i should check again with my measuring tools.
For amount of air bubbles, simmering, just like 1 of your pictures.
http://www.hydroponicsonline.com/for...7&d=1269505550
Your comments are really helpful. I think i need to restart my experiment and stick to DWC system.
Thank you.