bubbleponic/how often should i add/chang nutes

i have read its better to flush, ive heard to never flush because it can harm the roots, so i dont know if i should change the water or just add to it. what do u think?? i have a 10 gal system

anybody?????

Have you checked out a bubbleponics thread made by roseman? The answer might already be inside his thread. Infact I think IF I remember correctly...it is good to flush the system cause it helps the roots out? something along those lines...again when I start my bubbleponics grow I will probably be referring back to Rosemans thread.