new tank

[mycat99]

0k after looking around for awile i have decided to upgrade my tank from 55 gallon to 135 but got few questions .i want a herbie over flow should i just drill tank for 2 holes and put return over top edge?also am going trim less on tank and would black silicone look ok or go clear <the clear on my 55 is kind of green and i dont like it much .also would a eshopp 150 work ok for a sps type tank before i buy it