how often for SW water changes?

Is a 10g bi-weekly water change too much for a 29g Biocube?

 

Those 2 things aren't the only reason for water changes. The main reason is to replace trace elements that can't be dosed that tank inhabitants need to stay healthy.

 

ah, I got it. That was kinda the answer I was looking for. Sorry for another newb question though, what leaches those trace elements out? Is it the live rock and stuff that grows on it or does it just evaporate?

 

you can let them make suggestions but do your research before purchase. Keep a end goal in mind with your tank. Your tank will always run out of space before you run out of desire for animals, so wait for the gems.

For fish only you could go a long time if you don't have any nitrates. I would still probably do a larger yearly change tho.
but with the equipment you mentioned I doubt you will have that situation.

 

many different things, it could be chemical reactions, filtration, or life inside the tank using them.

when you get your saltmix check out the ingredients and how they are psuedo properly proportioned. imagine trying to dose all that.


I use the term psuedo because no salt mix perfectly replicates sea water, although saltwater varies based on region anyway.

 

ty sir, So many questions....SW is soooo much more complicated than FW