Dosing Question - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 09-16-2016, 03:55 PM Thread Starter
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Dosing Question

Hi everyone, I currently have a 200litre aquarium and im new to dosing. My aquarium has a set of 6500K, 52w Led lights with Co2 injection. Today I started a dosing regime and I would like to ask if Iím dosing enough.

I currently mix 16 teaspoons of kno3 with a 2 litre of ro water and dose 40ml twice a week. Giving me a dose of 3.72ppm per dose. I also dose trace elements. I mix 4 tsps to another 2 litre bottle of ro water and dose 40ml three times a week. On a separate day I dose 1 tsp of MgSO4 with a half litre bottle of water giving a dose of 2.52ppm every dose once a week.

Is this enough? If not How much ppm for each dose should I aim for. Thanks in advance for your help.
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post #2 of 7 (permalink) Old 09-17-2016, 05:14 AM
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We have known for at least 25 years now that aquatic plants struggle to grow without phosphates being added to meet their need for phosphorus. You can get several years supply of KH2PO4, monopotassium phosphate, for a very low cost. Depending on how bright your lighting is, you may need to supply CO2 to the tank also, or at least an alternate source of carbon, Seachem Excel or equivalent. I suggest you study https://www.plantedtank.net/forums/11...-regimes_.html

Hoppy
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post #3 of 7 (permalink) Old 09-17-2016, 05:59 AM Thread Starter
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Thanks for your reply Yes I said that i do inject CO2 and I'm holding back on phosphate as it was high due to fish waste I think . Now it's almost 0 so I will start to dose monopotassium phosphate too. how much ppm should I be adding of each nutrient? Thanks
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post #4 of 7 (permalink) Old 09-17-2016, 06:06 AM
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Take it easy on Hoppy. He's just trying to help and he's probably forgotten more than most of us will ever know.
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post #5 of 7 (permalink) Old 09-17-2016, 06:25 AM Thread Starter
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Sorry didn't mean to sound rude I just woke up lol. Thanks for all your replies guys
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post #6 of 7 (permalink) Old 09-17-2016, 06:22 PM
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Quote:
Originally Posted by seanbugeja View Post
Sorry didn't mean to sound rude I just woke up lol. Thanks for all your replies guys
I didn't consider your post to be rude. And, I did notice that you were using CO2, but I wanted to emphasize the importance of continuing to do so, if your light is providing more than about 35 PAR intensity at the substrate. I'm not at all sure it is or isn't.

I dose everything by volume, not ppm, because I can't measure a ppm when I dose. So, if I am trying to figure out how I want to modify the EI dosing schedule I start with ppm and convert that to a tsp quantity that works for my 65 gallon tank. Then, I forget the ppm until I want to do something else different. Lots of words to say, I don't know without doing some research what ppm of PO4 to add.

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post #7 of 7 (permalink) Old 09-17-2016, 06:30 PM Thread Starter
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Thanks a lot I guess it's best to dose and see the reaction of my plants. If see any signs of deficiencies I will correct accordingly. Thanks everyone for your help
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