Cleaning the glass

[Delphinus]

Originally Posted by reef_raf

And I guess that is the crux of this topic. Why is tank "A" different from "B"? Lighting? FLow? Water quality? Age?

Taking any and all guesses!!

All of the above, and then some! The two tanks are really two completely different beasts altogether. Different skimming techniques, different bioloads, different foci, different number and mixes of snails, one tank (the cleaner one) has caulerpa - the other one doesn't, ... different lighting, different current patterns...

I think age can also be a variable... A new tank is soooo sparkly clean. Then a tank gets to be a teenager, and is somewhat messy. Then the tank becomes a mature responsible adult, and is cleanish once again (with exceptions of course, but we don't need to go there). Don't know what happens at the geriatric stage, though!