skimmer
unless you have reverse refugium/sump lighting, i actually recommend leaving skimmers on at night. If I remember the lessons from my biology classes, photosynthesis during the day converts co2 to oxygen and vice versa at night. so if your o2 levels are better during the day and your skimmer is on at night will help to maintain the oxygen level in your tank.
__________________
____________
If people don't die, it wouldn't make living important.
And why do we fall? So we can learn to pick ourselves up.
|