Ziggy953
Aquarium Advice Addict
How long it takes depends on your water conditions more then anything. It wont stay white long....
I've never really worried too much about the coraline landing on my sandbed. I just leave it there and after a day or two it is gone. I don't have a major issue with coraline since my new tank has been up for only 2 months now. When I had the 72 I used to scrape it off the sides and the front and just let it go, it never stayed visible for more then a couple of days.
You can try and siphon it out but you will get some sand along with it.
I've never really worried too much about the coraline landing on my sandbed. I just leave it there and after a day or two it is gone. I don't have a major issue with coraline since my new tank has been up for only 2 months now. When I had the 72 I used to scrape it off the sides and the front and just let it go, it never stayed visible for more then a couple of days.
You can try and siphon it out but you will get some sand along with it.