kno3,phosphate and green water - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 06-27-2004, 06:32 PM Thread Starter
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kno3,phosphate and green water

ok, im fighting with green water again. my nitrates are at 5ppm, phosphate test is .25 mg/l. on chucks calc, he says the target levels are 5 ppm for nitrate. so should i leave the nitrates at 5ppm or raise them to 10ppm? also should i raise the phosphate level up to 1.0 mg/l? if so how much fleet enema should i dose to get to the proper level? my kh is 6, my ph is 6.4, and my gh is 6. should i be adjusting these levels since i have green water? i as dosing flourish every other day, flourish iron twice a week, leafzone once or a week (for potassium). i have held off dosing these since the green water broke out. any suggestions? comments? i am still getting good growth with the stem plants even in green water. help!

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post #2 of 10 (permalink) Old 06-28-2004, 12:47 AM
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Here is a link for green water that should help... http://www.aquariaplants.com/greenwater.htm

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post #3 of 10 (permalink) Old 06-28-2004, 02:54 PM Thread Starter
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any other opinions? what about my nitrate and phosphate levels?

75 gal, Schultz aquatic soil substrate. Filstar XP2 and a H.O.T. Magnum canister filter, 20# Pressurized Co2, Coralife 4x65 watt pc lighting.

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post #4 of 10 (permalink) Old 06-28-2004, 03:11 PM
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I would just keep those levels as they are right now. Those were the exact levels I had when I fought hair algae. I also stopped all micro dosing.

Anyway, 0.3ml of fleet enema will increase PO4 by 1ppm for every 10gl.

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post #5 of 10 (permalink) Old 06-28-2004, 04:24 PM Thread Starter
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so i should keep my nitrates at 5ppm? or let them dwindle on down? every time i test the phosphate level it is the same...0.25mg/l. i havent added any yet, but shouldnt this be getting used up also? sorry for the stupid questions, i just would like to get my water parameters correct.

thanks...

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post #6 of 10 (permalink) Old 06-28-2004, 04:46 PM
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This is just my personal opinion but my logic when I was fighting algae was that plants won't starve with those level of NO3 and PO4. I was afraid that adding those 2 too fast would create another algae woes. Also, the PO4 level in my tank would drop to 0 but not as fast as the nitrate. I guess plants use nitrate faster than PO4. After I have no algae, I raised NO3 closer to 10 and PO4 to 0.5.

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post #7 of 10 (permalink) Old 06-29-2004, 10:05 AM Thread Starter
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well my nitrate level dropped so i added some to raise it back to 5ppm...oops that sure made the water greener...DOH! any 1 else have any suggestions or comments? come on people..

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post #8 of 10 (permalink) Old 06-30-2004, 05:45 AM
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I would not add any ferts to it until you get the green water under control. you have a couple of options, cover the tank for a week, or purchase a diatom filter. green water can be a monster.

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post #9 of 10 (permalink) Old 07-01-2004, 01:39 AM
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dogg76...Did you take a look at the link I provided on curing greenwater, if so did it help or not help?

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post #10 of 10 (permalink) Old 07-04-2004, 08:13 PM Thread Starter
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ok, i got my water cleared up with a diatom filter. my nitrates were at 0ppm and i have slowly raised it up to 5ppm. my phosphates are still reading 0.25mg/l but i am trying to raise them to .05mg/l. should i raise my nitrates to 10ppm or leave them at 5? should i try to keep po4 at .05 or raise it up to 1.0?

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