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Old 07-11-2013, 08:26 PM   #1
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Evaporation

How many gallons of water will evaporate from my 90 gallon tank in a week? Also how often do I have to do water changes? Every time the nitrites, nitrates, or ammonia goes up?
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Old 07-11-2013, 08:41 PM   #2
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water change 10 percent a week on average.....and evaporation depends a lot on setup, do you have an open top, Glass top and what type of lighting...I have a 55 gal. with open top egg crate and led lighting with a wood top and filter fans in top... I evaporate 2 liters a day.
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Old 07-11-2013, 08:44 PM   #3
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Quote:
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water change 10 percent a week on average.....and evaporation depends a lot on setup, do you have an open top, Glass top and what type of lighting...I have a 55 gal. with open top egg crate and led lighting with a wood top and filter fans in top... I evaporate 2 liters a day.
Plan on glass top... Water change is for what?
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Old 07-11-2013, 08:53 PM   #4
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type of lighting matters a lot on evaporation metal halides burn hotter than t-5 and leds. A 10 percent water change per week is to maintain proper water balance you also need ro/di water.... read this Stock list and tips for maintaining your SW tank.
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Old 07-11-2013, 09:04 PM   #5
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Crap I'm adding 10% water to mine weekly just to take care of my evaporation.
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Old 07-11-2013, 09:10 PM   #6
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have you tested for ammonia, nitrates, nitrites, phosphates or the ph??? plus its better to replace water evaporation daily to maintain stable water chem....
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Old 07-11-2013, 09:19 PM   #7
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So 10% for 6 months then wait for the levels to even out and to put water back in you just mix the salt in the water your going to put in and heat it to the temp and pour it in?
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Old 07-11-2013, 09:21 PM   #8
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My ATO reservoir is 5.5g and goes low every 4 days or so. I have open top and a quad T5 fixture. Also depends on the ambient room temperature in your house, I notice when it gets really hot here I go through more water, of course. But on average I go through about 10g a week I'd say on that tank.

On my open top 125g I go through almost 20g a week, I also have a 12 bulb fixture on that tank so it does get kinda hot under there.

Hope that helps
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Old 07-11-2013, 09:23 PM   #9
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I do a 40% water change on my 90g every month. Its a fish only system so the parameters stay pretty good, except the nitrates will get a little high which in a fish only system is kinda ok. lol I would suggest going every 2 weeks as every week can be a bear to do, at least for me.lol If you are doing a reef tank you really do need to do water changes frequently as the change doesnt just take out bad things it also adds elements that are in the salt for the corals such as iodine, calcium magnesium etc etc....
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Old 07-12-2013, 02:33 PM   #10
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Quote:
Originally Posted by Fishhooked View Post
Crap I'm adding 10% water to mine weekly just to take care of my evaporation.
I hear you on that one haha. Open top 180 gallon reef with 3 halides. I add a gallon a day at least
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