How often to do a water change
- Thread starter choward1980
- Start date
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5-10% weekly
Or
10-15% every other week
Or
25% once a month
The water will tell you when you need to change. Or you get into a routine and pick one of the above, doesn't have to be exact. You just need to watch your nitrate levels, or alk and cal numbers, if the alk and cal come down to much and your not going to dose then do a water change, if the nitrates creep up before the alk falls do a water change. But if you let it go to long, and the Trates have risen to high, then you will need to do a few water changes in a row to get them back down.
Or
10-15% every other week
Or
25% once a month
The water will tell you when you need to change. Or you get into a routine and pick one of the above, doesn't have to be exact. You just need to watch your nitrate levels, or alk and cal numbers, if the alk and cal come down to much and your not going to dose then do a water change, if the nitrates creep up before the alk falls do a water change. But if you let it go to long, and the Trates have risen to high, then you will need to do a few water changes in a row to get them back down.
vlangel
Seahorse whisperer
I have a 36g and I also do a 5g WC every week. I never have fish die so that in itself is not the problem. I mix my own and I try to match the temperature and the salinity as close as possible to what is in my tank. That is a good time to check the PH in your tank as well. Generally doing that amount of WC in your size tank should keep a good stable PH though unless something is drastically wrong.
vlangel
Seahorse whisperer
It doesn't sound like you are doing anything wrong. Are these fish fairly new purchases? Sadly sometimes new fish just fail to make the adjustment to our tanks and the stress of the WC might be what does them in, but often those fish are doomed anyhow.
OP
OP
choward1980
Community Member
3 clowns, a clown golby and a lawnmower blemmy. I have a small yellow tang and a small clown in there now with 2 peppermint shrimp. All these fish have not all been on here at the same time. I had 2 clowns that died and I replaced them and the other one died yesterday about 7 hours after a water change.
marine2463
Active Member
Your specific gravity should almost match. Are you doing top offs everyday to keep specific gravity the same? Also temperature and the ph of your premixed water should closely match. I would also try to keep a wave pump going while putting in the water to help circulate. Ounce I have enough water inside I try to run my main pumps before adding the rest of the water
Connie
Valuable Member
In the past I have done a 7 - 10 gallon water change weekly, siphoning the sand bed every other week. The past couple of weeks, however, I have been doing a 7 gallon water change every 3rd day. I can actually see a difference. I'm trying to be a coral whisperer...lol
sbitt79
New Member
Does this happen everytime you change water? Are you checking the temp of the water? When I do water changes my tank is set at 78. I heat the water change water to this temp also before I change. If your tank is 78 and dump in water that's lets say 68, you could be shocking the fish as well
sbitt79
New Member
In addition, I wouldn't keep three clowns together. Especially in that size tank. I have a BC 29 have two fish and feel three would be pushing it. They say you should keep single clown or in pairs
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Monthly as I add water frequently
beaslbob
2500 Club Member
Naaaaa
Actually if the tank is blanced out and stabilized there is less need for any water changes.
But tht's just my .02
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