Setting up a new tank, a few questions...

[spikehs]

Hello all,

I am going to be setting up a new tank soon and had a few questions i was hoping someone could help me out with. The tank is going to be 90gal with ~20gal sump.

1. I have an aquasafe RO/DI unit, I was probably running it for around 1 year making about 5gal/week. It has now been sitting for about a year. Would it be a good idea to replace all the filters/membranes in it? not really sure how much life is left/ the effects of letting it sit with water for over a year. Does anyone have the link for the aquasafe website?

2. I want this setup to be as quite as possible, I had planned to line the inside of the stand w/ some styrofoam to absorb most of the noise, can anyone see any problems donig this? I figure I'll have to vent it some due to heat buildup

3. I want to run a canister filter w/ carbon/rowaphos etc. what would a good GPH to have? 2, 3 x the tank volume?

Thanks for the help!