I use a single pre-filter and then an RO/DI 5 stage unit. You will more than likely have to use a booster pump as most well set-ups run a holding tank that switches on the main pump when it hits 40 psi and builds up pressure till 60 psi. The booster pump will run at about 80 psi to help the RO unit be the most efficient and give better life for the filters. Check on E-Bay and you should find everything for around $350 - $400 range (seeing out dollar really sucks right now)
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Mike
150g reef, 55g sump, T5's, Vertech 200A, Profilux III - German made is highly over rated, should just say Gerpan made.
Reefkeeper - individual obsessed with placing disturbing amounts of electricity and seawater in close proximity for the purpose of maintaining live coral reef organisms.
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