On Mon, 22 Nov 2010 21:23:22 -0800, "Steve B"
wrote:


"Ignoramus18625" wrote in message
m...
I finally visited Wal-Mart and bought two timers. I want to run the
skimmer off of one timer, and aerator (fishtank style air pump) on
another timer.

My question is, do I need a stone on the aerator, or not. I am
concerned that the stone will eventually become plugged by coolant
residue. If bubbling water without a stone is a little less efficient,
I do not think that I care too much.

Any thoughts on this?

i

Do the math, ig. Finer bubbles make for more surface area to transfer
gases. I use a stone when aerating my wort (beer cooked in the first phase)
with oxygen. It helps the yeast to work better. What are you aerating
coolant for?

My thinking was just the opposite. Its in the back corner of the sump
with its main job to push oil to the skimmer. No way to see if the
stone plugs, and it will. If your stone plugs and you don't catch it,
you're in for a totally awful job of cleaning a putrid sump.

Always more than one way to skin a cat.

Karl