hydroton question

i have a 4x6 ebb and flow tray and i have 6" net pots filled with hydroton holdin the plants.. right now im using these stupid cardbord strips to cover teh roots outside the tray but instead of doin that i just filled the whole tray with like 2.5" of hydroton to cover the roots. is this a good idea? it seems like it was too much of an easy solution and i havent seen anyone really doing it on the site.. let me know what you think

What you did is fine. Due to gravity it wont be long before your tap root hits the nutrients then all others will follow. Just try to minimize exposure to light regarding the roots.

Peace