Help cyceling please

• Eight days ago i set up my 30 gallon Biocube tank and that included the following: Live sand covering the bottom, 60lbs of live rock, saltwater "start zime", and a few crabs for bioload. The tank has been running for eight days and there has been a blooming of brown and light green growth on the rock and sand. A cupple of days ago i added a damselfish and last night i tested the ammonia, nitrates, and nitrites and everything is STILL at 0ppm. Is my tank cycling? is anything wrong? I would much appreciate help .

 

im a newbie here & to all this saltwater stuff & well im not sure if im correct & i wouldn't say base all decisions on my comment...
so on that note, i don't think anything you have in your tank will live... you needed to get a got months worth of cycling time before adding fish.. now your live rock & live sand will help with cycling but from what i have read & from whom i have chatted with,the way i understand it is that you put all that stuff but the fish & then put in some bacteria, or i have been told a piece of table shrimp to start cycling process... you have to have the bacteria for it to cycle correctly... then when you have your ammonia & nitrates correct you can slowly add your fish...

hope this helps & please search this sight to verify i am correct....

 

Might be diatoms, which could mean the cycle completed.

 

That could be just from all of the LR, you have 60lbs in a 30G ? and sand also... make sure you know that means you actually have A LOT less then 30G of water in there, so Swift changes can happen easier as the less water you have the less stable your ecosystem will be. i would give it 2 weeks more with what you have in there now and monitor them and see if they die and when you notice something dead, test to see what killed em.

 

no nitrates?