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Old 05-05-2004, 08:35 PM   #1
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water changes

How often can a 40-50% water change be done?
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Old 05-05-2004, 08:41 PM   #2
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As often as needed. What's wrong that you need to do multiple 40-50% water changes?
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Old 05-05-2004, 08:51 PM   #3
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I need to get my nitrate levels in check. I guess I should explain. My husband has always done the water tests and changes on our tanks but he's working alot and now that chore has been shifted to me. While testing I realized we didn't have a nitrate test kit so I picked one up last night. Lets just say, I was shocked at the results and figure I need to do some big water changes to get them back down.
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Old 05-05-2004, 10:00 PM   #4
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I'm no expert, but I'd say it's a math problem...

If you do 50% water changes, the first change would cut the nitrates in half, the second would cut it to 25% the third would bring it down to 12% etc...

But if your levels are rediculously high, maybe there's a root cause? You didn't mention if you were acting to correct that. I'm lucky to have a small tank so I can easly change 50% of the water once a week.

As far has fixing the root problem you'll need to ask these other guys, I'm still a noob when it comes to that stuff.
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Old 05-05-2004, 10:13 PM   #5
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Mabye your test is not correct?
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Old 05-06-2004, 01:51 AM   #6
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What kind of tests are you using?

Are you overfeeding?

What kind of water are you using?
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Old 05-06-2004, 02:15 AM   #7
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I had a problem with nitrates and switched test kits. Was using the quick test strips that you dip in the water. Nitrates were always high. Spent a little more on a test kit that took a little more time and Nitrates were actually almost zero.

I've learned to feed less. My fish look pathetic coming to the tank all the time, but there is less waste, even if it looks like they get it all.

I had a problem with nitrates when I would get ocean saltwater and didn't use it right away. There would be some die off and I wasn't able to get my nitrates down. Now I'm going with strict RO/DO saltwater. I'm considering mixing my own, but I'm not that brave yet.
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Old 05-06-2004, 02:17 AM   #8
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Oh, one more thing. I would suggest a cleaner or fire shrimp. They do a good job of taking care of little particles. They'll help. Snails are good, too. 1 or 2 per 5 gallons is a good rule of thumb.
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Old 05-06-2004, 07:01 AM   #9
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I'm using tap water. (looking around for a ro unit right now) The test kit is Aquarium Pharmacueticals. I thought it may be the kit itself so I tested some of the water I have sitting to do the water changes and it was fine so the problem is the tank itself. I only feed every other day and I have two cleaner shrimp, two peppermint shrimp and about 20 nassarius snails. The tank is 2 yrs old. Thanks to everyone for your replies.
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Old 05-06-2004, 07:56 AM   #10
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looking around for a ro unit right now
Get one on ebay for 135 shipped. I'll se if I can find the link.

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The test kit is Aquarium Pharmacueticals
I use this kit also. If it's not old it's pretty accurate.

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only feed every other day and I have two cleaner shrimp, two peppermint shrimp and about 20 nassarius snails.
What no fish?


Ok How high was your nitrates anyway? Also when was the last water change? And since your gonna do a water change do you have enough aquarium salt to do multiple 50% changes?

Oh an dwelcome to AA.
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