Leslie, you're going in the right direction. You'll be very happy when you're all done. 'Grats......we expect lots of pix of your progress.
LeslieS said:
As far as the lights go, each T5 unit has 4 36" 39W bulbs. That's a total of 8. Should I still look into the Quality fixture? 48" is too long to fit in the canopy which is a must to keep the cats out.
I'm very confused how you're going to install two 4 x 36w fixtures. You say that you can't put a 48" fixture over the tank, but 72" will work. I'm guessing you plan to stagger the two fixtures. If that's the case, the width from front to back with the fixtures staggered will be too wide for an 18" tank.
I don't know how handy you and your b/f are, but it sounds like you'd be much better served by getting an empty hood and installing a DIY retrofit T5. You can get everything to fit just right in a 48" hood. No staggering and overlapping etc.
LeslieS said:
Should I try to buy small or large grain sand? At what stage do I add sand from another tank?
Small grain sand, like sugar is ideal. It has more surface area for denitrification (a highly debateable topic btw), and it's safe for sand sifting stars, gobies, wrasse.
You can add the sand right from the time you cycle your tank. The LR will actually help to seed your LS in addition to adding LS from another tank or two.
LeslieS said:
How much water should I purify? The tank is 120 gallons, and the sump is 30.
I would process enough water to fill your tank and sump, and enough to do a few (10%-25%)water changes. If you can get a 50 gallon Rubbermaid Brute garbage can (NO METAL COMPONENTS) to store your water in, it'll make your water storeage much easier.
At the beginning you'll want to siphon out a lot of die off and crap that settles on the bottom. As you do this, you'll need to replace that water with new saltwater. A second Brute container for you to pre-mix and store your saltwater in will prove to be invaluable.
Important note: All systems will evaporate a different amount of water depending upon geographic location, weather conditions and other various factors. You must remember, replacing water that has evaporated MUST be done with freshwater NOT saltwater (this is called topoff).
When you do a water change, or remove any quantity of water, that MUST be replaced with new saltwater.
Therefore, having two containers for water storeage is very helpful. This way you're not scrambling to process new RO/DI water (takes a lot of time) and then mixing salt in and allowing it to sit the suggested 24-36 hrs before use.
LeslieS said:
RE the live rock. How does everyone feel about the Kaleeni (sp?)
Kaelini is a great LR. You will do MUCH MUCH better going online to purchase LR. I don't know Fishtowns prices, but I'm going out on a limb here and saying MINIMUM of $8/lb, some as high as $14/lb. If you checkout
reefermadness.us you'll find great LR and great prices. Even with shipping you can get Kaelini for under $5/lb. You can even get
Fiji for under $4/lb.
Good luck. Keep the Q's coming.
Russ