Changing gravel

[Aquascaper]

I was actually thinking of mounting the lights under the tank rather than in it

 

[love fishies]

I just changed my gravel to riverstone when I transferred my goldfish to a larger tank, used all the water and topped it off with some more conditioned water in the next couple of days. Did not wash anything off, decorations, etc. and it all worked fine for me. I love these faces, there is alot more selection than another forum i belong to.