thanks opie for the reply ;]
i will be adding an overflow on the tray, everything seems much easier that way..
And now I definately know i need to order more hydroton.

I'm suprised to find out that it will actually work to have the roots suspended in air.. And really happy too


In addition to the hydroton I will be ordering Super Thrive, Liquid Karma, and Hygrozyme.

It says 500ml of hygrozyme is $18... That seems really expensive..
How long will 500ml of hygrozyme for a 50gal reservoir last? The 1L is $30