bromie88;3357589; said:basically this post sums it up. everything generally is expensive. but where equiptment is concerned you only have to buy everything once (exept salt of course), and most of it you have.
the actual fish keeping isnt any more difficult than FW. corals arent as difficult as most people think either. most will just require a certain amount of light, to produce enough food, and possibly habd feedings and dosing some trace elements. but id recommend waiting at least 6 months before you buy any corals though, just to let everything settle down. as they are quite sensetive. do your research first. it'll pay off in the long run. when keeping marines, when it hits the fan, it really hits the fan.
some things id also read up on if you havent already, are types of filtration for marine aquaria, specific gravity or SG, and drip acclimatisation.
the filtration i have now is a 3 chamber sump that trickles through sponge media into a chamber with bio balls. the sump has a built in protien skimmer but i think im missing parts. there is also a CPR over flow box in the back. im pretty sure i will want to replace all of my pumps, they are getting worn out.