new reef tank water change question

st3

Member
hi i have a reef tank that has been running for abot 3 months maybe even 4 now. when do i do my 1st water change and how much do i change? once it is done how often should i repeat this ? i only have lr corals and anemones and 1 mandarin. i also just recently started using my prizm skimmer also.
 

wamp

Active Member
Well... You should have done 2 by now at least...
I would do a 20 gallon change once a month.
 

noodle

Member
indeed. I have a 29 gal tank. I like to do a partial water change every 2 weeks. With mine i change 5 gal at a time.
 

karlas

Member
i have a 75 and do about 7 gall a week in it. everybody does it different weekly, biweekly, once a month you just have to figure out which works best for your tank
 

st3

Member
i thought that once a new set up has been established your supposed to leave it for a couple months before u start getting into your regular water changes. i also remember someone on this forum stating to me that in a reef tank u do not have to do as many water changes as you would in a fish only tank. this guy said like 10 % every 2 months or something. plus when i clean my 2 fluval 404s it also decreases the water by about 10% when i fill em up again. then i top it all back off so does this also count as a water change?
 

richard rendos

Active Member
Regular water changes are greaat, but also make sure you check for nitrates. If they are above 20 ppm you should do a partial water change. I like changing around 20% of tank volume.
 
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