alright guys, just picked up a 75 gallon reef ready aquarium that came with the stand, hood, sump and protein skimmer for 300 bucks, what a deal. anyways I have some questions. The sump that this thing came with has the little black balls in it (bio balls i believe), what exact purpose does these things serve? The next thing is about the protein skimmmer. The guy basically threw it in and told me it needed a pump, probably a rio 800 or 900. Is this too small for a 75 gallon aquarium. My local guy told me that this was way undersized but he is way overpriced so I would like to get a few opinions on this before I go geting rid of it and buying a new one. Alright next off I was planning on doing a dual 175 metal halide setup probably 20K. From everyones experience, will I need to run a chiller with this setup. I am planning on having fans running to circulate air through my hood but wasn't sure if this was going to be enough. Alright thats all I can think of now but I know I will be back for my questions in the near future. Thanks for any help.
Sean
Sean