Could my tank cycle this fast?

Its been 10 days, and my ammonia and nitrites are back @ zero. Its a 29 gallon with live sand/rock and Ive been adding some bioculture mix in everyday(as per directions). Within the 10 days I checked all my #'s four times and this is what has came back...
Ammonia- 0, .3, 0, 0
Nitrite - 0, .2, .3, 0
Nitrate- estimated - 5, 10, 8.5, 8.5
Alkalinity - 4, 3.5, 4.5, 4
Salinity - 30, 31, 33, 34
Ph- 7.8, 8, 8.1, 8,2
SG- 1.0225, 1.0225, 1.024, 1.0245
Temp constant @ 78

Obviously im not going to go buy fish tomorrow or anything, I plan on watching the numbers some more. What do you guys think? I started noticing some algae growing on the sand and some on some dead coral thats in the tank, but none on the glass....

 

You sure you have your nitrates right?

 

My nitrates scale goes: 10,20,40,70,100 and every time its been equal to or less than the "10" on the scale

 

the tank me and my husband set up cycled in about two weeks. but we didnt use any bioculture mix, just shrimp. i thought it was weird but didn't really care because we too aren't planning on adding fish for about another month or two, maybe even longer. we're taking things very slow lol

 

ya, I don't mind waiting b/c i already assumed it would be 4-6 weeks. If my cycle is over, i guess i'll just wait until i get some more algae growth then start getting my cuc.

 

Does my Nitrate test kit go by a diff. scale than usual? or should my numbers be diff?

 

with good live rocks most tanks will complete the ammonia- nitrate part of the cycle in a week or less. i wouldn't say its coral ready yet, you could still have some parameter swings coming

 

I use the API reef kit so it goes by the color and and zero is where I want it to be.

 

ok, I dont plan on doing any corals so how much more should i watch the #'s before i add a fish or 2? or my cuc?

 

have you had any brown algae yet? (Diatoms?)