gravel

[treaxy11]

i have an established tank going on 3 months old. how can i safely take out some of my old gravel and add new (i will leave majority of old) and add new rocks to the tank. i have a 10gal with 6 ember tetras. thanks.

[robflanker]

yeah i dont see a problem

[Lab_Rat]

Are you asking about switching substrates or are you trying to get a new tank started?

[Northernguy]

It sounds like they want to change color of the gravel.
It should be fine! Your filter holds the largest part of your cycle.Do a good gravel vac before removing it.Your tank will stay much clearer.
Rinse the new stuff before adding it.
Do not rinse your filter out for a week or two after.
Pics of the change would be nice!

[Rue]

Yup - what they said!thumbs2:

[jaysee]

Wash it well and drop it in. You can use your net to take out some of the old and put in whatever new stuff.

(OP wants to replace a small percentage of the existing substrate)