50% water change OK?

[rwb500]

I want to upgrade my 10G holding tank to a 20G. This would mean I need to double the water volume, effectively giving the system a 50% water change. Is this OK? Should I be extra careful and make it a shallow 20 gallon by just filling the tank with all of the original water and then slowly adding the new stuff? or should I just go for it?

the tank currently has a ton of SPS, softies, and 6 baby ocellaris. I do not want any casualties.

 

[elegance coral]

It's fine. Just make sure the water temperature and PH are about the same. I've done many water changes, much larger than that with no problems.

 

[121]

If you want to be extra careful (as you have SPS), match the KH and Mg too. You should get a bigger upgrade if you plan to keep your 6 growing clownfish.

 

[rwb500]

thanks guys. and its just a holding tank. the clowns will be in a much bigger tank very soon.

 

[snorvich]

It's fine. Just make sure the water temperature and PH are about the same. I've done many water changes, much larger than that with no problems.

And salinity!

 

[rwb500]

^haha. thanks.