Does spirulina powder cause oily water surface?

[Levinson]

Does spirulina powder cause oil on the water surface?
I sprinkled a pinch of spirulina powder to my 29g tank today. It was a bad idea. The powder was just floating on the surface and I tried my best to stir the surface so they sank. Now that I think about it I should have mixed it with water first then put it into my tank.
Anyhow, it looked like the water surface was clear enough so I left. After several hours I looked into the tank and it seems there's a thin oily surface on top of the water which I don't think was there last night.
Could the cause be the spirulia or something else?
It won't be too difficult to deal with the oily surface but just wanted to know if this is what I should expect every time I put in spirulia powder I'm the tank.

 

[RVA REEF]

why did you put it in?

 

[Coralsdaily]

I don't believe quality spirulina product emits grease to the water. Your overflow should also take care of any grease in the surface. But many frozen food do come with oil on them. the aren't always bad. If you want to provide spirulina as part of your fish/critter's supplimental diet (they are super food), you can consider this- easy and no mess.

 

[Levinson]

why did you put it in?

For the pods plus I wanted to add more nutrient for ATS.

 

[Levinson]

I don't believe quality spirulina product emits grease to the water. Your overflow should also take care of any grease in the surface. But many frozen food do come with oil on them. the aren't always bad. If you want to provide spirulina as part of your fish/critter's supplimental diet (they are super food), you can consider this- easy and no mess.

Thanks, I will check it out.

 

[RVA REEF]

you could always add fish food with spirulina in the ingredients, or take off the ATS so you dont have to feed it nutrients