Post #654998 by mike and marie on Tue, Oct 9, 2012 7:44 PM

On 2012-10-07 19:59, swizzle wrote:
When keeping an aquarium or pond, YOU are the one who is in control of both those factors. Generally both of those things will be present but it's not until you have an excess of one, or both, that the algae becomes a problem.

Swizzle, thanks for the algae lesson. We can say that light will probably not be an issue because the area where the waterfall will be is nearly pitch black most of the time. No sunlight at all, and the only light that hits it is when we're down there. There's also no fish or anything else, so no organic matter either ... so can we consider ourselves safe from algae?

We actually plan to use tonic water instead of plain water, allowing it to go flat first, because it glows in black light.