Hi Guys
Thank you you all for the support, really appreciate the warm welcome.
i will read thru the pinned posts but i think it will take me some time to digest it!!!
I understand about the gravel, but not so much about the OHF! Cos my OHF is the 9 box type, even if i use a sump tank wouldn't it be the same? Pls enlighten me, and what would be suitable option.