bmxer193

I have a 10gal with 1 mollie and few snails.This tank has been cycled for a few months now. I was thinking about taking out the old gravel (which are more like colored stones not gravel) and puting in new gravel, Now my question is can i add new gravel WITHOUT messing up the cycle

Could i burry the old gravel (theres not much of it) with the new?

Isabella

If you're careful, you certainly can replace the old gravel with the new gravel without disrupting the cycle. If you have a lot of the old gravel, replace it gradually. Example: today you remove 25% of the old gravel and add 25% of the new gravel. A week later you replace another 25%. And so on. Until you've replaced 100%.

bmxer193

ok thanks for the help!

fungusonmytoe

I plan on replacing the gravel in my 20 gal as well, i found this article online that was very helpful...

http://freshaquarium.about.com/cs/qa/l/blqa2008.htm