>>It works by encouraging the growth of larger organisms and restricting growth of bacteria ect.
Can I ask what you use to restrict bacterial growth?
>>They are very small, and produce eggs or spores....something cellular.
Can you clarify what you mean by small? Relative to what? In what type of sample? Surely, you must acknowledge that within body tissue, etc. they are anything but "small", no?
Also on wordchoice "cellular". What in the body or related to any organism is not? Again, can you clarify your intent a little better. Just trying to "get ya", S.