Morledzep;2356281; said:what i would do..
i would take half the water and some of the substrate from your established tank. put the new FX5 on the new tank and take half of the filter media in the old FX5 and put it in the new one.
then top off both tanks and start up the filters and you now have a "cloned" tank. and it will be ready for inhabitants in less than 24 hours.