[ozzychas]

I have a 55 but i have grown out of it 2yrs ,so i'm going for a 90 my question is this,
i have a ro/di unit but making 90 gal plus sump will have alot of waste!!! so can i use reg water, mix in tank with salt running the sump and protein skimmer, will it be ok if so how
long, with nothing in it should i wait for it to become allright to put rock back in and sand from my 55 thanks in advance,
one more question can anybody tell me the diff, between a t-5 unit and a t-6 unit is there that much diff,the reason i'm asking i have pc's now and i was thinking of upgrading??
right now i have 6x65 watt pc's 4-10k daylight 2 ascentic is it enough for a 90, couple fish and some corals thanks again,
ps i drive
a rig for a living so give me some time to answer back,dam i work to much!!!

[Arnold40]

You should not use regular(tap) water to fill the tank initially. If you do, you will be starting the tank off on the wrong foot. You will be placing in the tank all sorts of undesirables such as phosphates, nitrate, heavy metals etc.. Do yourself a favor and start it out the right way.

[pyromaniac398]

Like arnold said DO NOT start the tank on conditioned tap water. You will kick yourself later down the road. If you really don't want to use your r/o unit then go to wal-mart and get gallon jugs of distilled water. Not drinking water, distilled water. Before I got my r/o unit I used wal-mart water for everthing, top-off, water changes, and filling up the tank. Its like 50 or 60 cents a gallon. If I were you I would just bite the bullet and use your r/o unit save that money .

[Taras1]

To answer your second question, T-5 and T-6 refers to the size of the flourescent bulb. Go with a T-5 unit, they're very efficient. I use an 8 x 65 for my 90 gal. You can go with a unit with individual reflectors which is supposed to increase the light penetration and efficiency.