125Gal start up Need some addvice

[BlueTang<3]

ur going to need a massive flow improvement or u will be fighting algae problems and well its probably at least 20" deep so u will need a pretty decent light if u are talking corals and well deltec makes the only decent hang on the back skimmer i have seen thats any good but if u keep the bio load down it is not a asset but imo the aqua clears are useless in saltwater unless u can commit to clean then regularly and only run filter floss in them for water clarity but what from i learned save up and buy good quality stuff to start it will save u from wanting better down the road good luck