EI Water Change Schedule-Anyone Do Every Other Week? - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 05-29-2013, 11:20 AM Thread Starter
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EI Water Change Schedule-Anyone Do Every Other Week?

I've religiously changed 50-60% of my water once a week on my 150. Anyone ever tried once every two weeks and seen any downturn in plant heath?


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post #2 of 5 (permalink) Old 05-29-2013, 12:23 PM
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you could probably get away with it if it is a medium or lower tech tank.

but with the IE dosing, the weekly 50% WC are needed.


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post #3 of 5 (permalink) Old 05-29-2013, 04:01 PM
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You can slowly reduce the dosage amounts until you find the optimum dosages for your tank. Just cut the amounts by about a quarter, then watch the plants for a few days to see if they continue to grow as well. If they do, cut the amounts by another quarter and repeat. Do this until you see the plants not doing as well, then go back to the last dosage amounts and continue with that. You can do this with one chemical at a time and get better results.

Once you have found the optimum dosages for your tank, and your conditions, you will have less excess nutrients in the water and you can increase the time between water changes, or the percentage of water you change each time. Just remember that if the tank changes - more plant mass, less plant mass, more light, more CO2, etc. - you may have to readjust the dosages.

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post #4 of 5 (permalink) Old 05-29-2013, 04:11 PM Thread Starter
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I decided the week before last to experiment and see what happens. I do water changes on Sunday so I dosed macros on Sunday and micros on Monday, skipped Tuesday and dosed macros on Wed and micros on Thurs, skip Fri, etc. Your way makes better sense but since I am only a few days from this two week test I'll continue on until Sunday and see how everything looks at that point.

Thanks as always for your good advice.


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Originally Posted by Hoppy View Post
You can slowly reduce the dosage amounts until you find the optimum dosages for your tank. Just cut the amounts by about a quarter, then watch the plants for a few days to see if they continue to grow as well. If they do, cut the amounts by another quarter and repeat. Do this until you see the plants not doing as well, then go back to the last dosage amounts and continue with that. You can do this with one chemical at a time and get better results.

Once you have found the optimum dosages for your tank, and your conditions, you will have less excess nutrients in the water and you can increase the time between water changes, or the percentage of water you change each time. Just remember that if the tank changes - more plant mass, less plant mass, more light, more CO2, etc. - you may have to readjust the dosages.


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post #5 of 5 (permalink) Old 05-29-2013, 06:01 PM
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I do a modified EI dose and do bi-weekly water changes. Works for me.


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