Phyto getter lighter not darker

[FB]

I started a phyto culture last thursday. I had an old orange juice container. I rinsed it out with hot tap water and let it dry. I had used live phyto from an LFS (they culture it). I added the phyto to the bottle topped it off with saltwater from my mixing container. I then added the algae grow according to the instructions. I have had it on a 16 hour light cycle 7:30 - 11:30 using 2 20W florecent tubes.

I checked it yesterday and it seems to be getting lighter not darker. There is no settleing of phyto in the bottom. I can see the water moving around because of the bubbles.

So my assumption is that something was not sterile enough and their are bugs having a buffet in my phyto culture.

I would expect if the phyto were to die it would collect at the bottom of the container.

Any help is greatly appreciated.

Thanks

FB