On Wed, 03 Mar 2004 14:36:59 GMT, "'nutherBob"
wrote:


I'll try another change today and keep the lights for viewing only since the
tank is in a naturally well lit area anyway.

That's your problem right there. Natural light will make alge bloom
like there's no tomorrow.

I have a 80 gal and have had an alge bloom problem -forever-. Turns
out that at about 2:00 PM, the sun shines on the basement window,
through the vertical blinds, and lights up one corner of my tank. I
covered that area with a few pieces of blue backerboard, and presto,
perfectly clear water - and I leave my 30W & 25W flourescent tubes on
for 7 hrs a day.