Welcome back to the hobby first off, some never return..
First you have to decide on wether you will want to go with some corals later on, a lot will depend on that..
Next, ditch the undergravel filter..
As to your question and for fish only right now- Temp is okay..it's strange to get readings of ammonia and trates with no trites though, but ideally you'll want to no ammonia or trites. As for nitrates, in a fish only system, they are acceptable up to 30 ppm
even. It's when you add corals and inverts that nitrates become an issue and should be kept at near zero to zero. The bio-wheel is a nitrate factory, I took the biowheels out of mine and used it for flow and carbon, then recently ditched it.
The best way to get your water ready is to make sure the tank goes through a complete cycle. This can be achieved by using LR
, and is commonly used instead of shrimp and/or live fish(poor damsels). The LR
, after cycling the tank and harboring the good bacteria, now become your biological filter. If you use uncured LR
it will take some time to cure and you will likely have a rough cycle. Using already cured LR
will result in a softer cycle, and usually that means shorter as well.
As for lighting,on a FO
, the flourescents will be fine..when you put corals in the mix it's more complicated. A few types of mushrooms and leathers will survive under No lights. Some Large polyps tonies can be kept under power compact, VHO
, T-5 and small polyp stonies usually require MH
lighting, but some species will so okay under pc
's as well...
Here's what I'd do..
Throw in some sand, crushed coral, etc...
mix and fill w saltwater
add a couple powerheads for flow
test water religiously to see the cycle (0 amm., 0, trites, small amount of trates..
Wait a week...
Add fish slowly
Sorry so long winded and hope it helps....