All oxygen exchange is done at the surface either with FW
doesn't exchange oxygen as well as FW
so more current is needed at the surface then what air bubbles can produce. I've always used power heads in my FW
tank as well since I really don't like the looks of bubbles personally.
As Scott mentioned www.drsfostersmith.com
doesn't charge extra for heavy items like salt buckets so it's probably much cheaper to buy salt there also then your lfs
. I'd get the 160+ gal
bucket so it will last you awhile.
are fine for fowlr
There isn't much of a difference between fowlr
and reef tanks. Reef tanks need better filtration (quality skimmer) to keep no3
below 10 ppm
and higher quality lighting since most corals are photosynthetic. Your 40 gal
would be fine for reef.