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Darren88
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i was just looking and i have a 120 gal planted tank im running a pressurized co2 system on it 2x t5 bulbs 2x t8 bulbs and 1x LED bulb strip i also treat with flourish excel once a week and flourish iron once every 2 weeks....... is it totally necessary to use flourise nitrogen, potassium, ans phosphorus or is just a seachem money grab... also is there any other way to supplement the tank with these elements?

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Adding Flourish anything on a 120 high-tech tank is WAY too expensive, IMO. You'll save a TONNE of money buying all dry ferts. That being said, NPK is necessary for healthy plant growth and keeping algae away.

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It depends. I'm not really sure how much light you have. What are the wattage of each?

If you're plants look healthy with no holes, or browning, or other deficiencies I wouldn't change anything. If you do want to add macros and micros, use dry ferts instead. They are a fraction of a cost of seachem and the others. Why pay for water?

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Also, if you have a CO2 system, there's no reason to add Flourish Excel (unless you're using it for spot treatments on algae.) I buy Flourish Iron and Trace, but use the dry ferts for the NPK. You can buy a dry iron + trace mix too if you want.

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goto all seasons garden center just off whyte ave...ask for kno3, kh2p04, k2s04, and trace mix. The kno3 will come mixed in water..250 g in one liter will last you quite awhile. everything else will 250g dry.

the k2s04 is not really needed but i add on water change days for extra K.

Edited by ubr0ke
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I added a premix KNO3 that I purchased from the south side Edmonton hydroponic store and it was suggested to add it at 5 x the dry dose.

My questions :

1./In a heavily planted 30 gallon where I routinely measure 10 ppm Nitrates; why add KNO3?

2./ When I did add the solution (1 cc) the Nitrates went to 20 ppm, doesn't that harm the fish long term.

3./ My admittedly little research suggest that 5-10 ppm No3 is plenty for plant growth, is that not correct.

4,/ Am I totally missing the point?

John

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John, you probably don't have to dose KNO3 if your NO3 is really at 10ppm already - are you sure your test kit is accurate? You will likely need K, so if you have K2SO4 or KCl. If you're not dosing NO3 on a regular basis, you may want to test for it daily in a heavily planted tank... I dunno, I don't own any test kits.

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  • 1 month later...

I added a premix KNO3 that I purchased from the south side Edmonton hydroponic store and it was suggested to add it at 5 x the dry dose.

My questions :

1./In a heavily planted 30 gallon where I routinely measure 10 ppm Nitrates; why add KNO3?

2./ When I did add the solution (1 cc) the Nitrates went to 20 ppm, doesn't that harm the fish long term.

3./ My admittedly little research suggest that 5-10 ppm No3 is plenty for plant growth, is that not correct.

4,/ Am I totally missing the point?

John

Price?

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Hi there,

I run a heavily planted 90G, pressurized C02 tank and yes at some point it will be necessary to start dosing. I am currently using the "EI" method for dosing and you can get the ferts from here: http://www.aquariumfertilizer.com/

I ordered mine and started dosing around a month ago. It was packaged nicely and came within 5-7 business days after ordered. Lots of improvement so far in plant growth and color. Watch dosing KN03 as you may already have enough. Generally 10-20ppm is enough N03.

Pickup the CSM +B for trace from there as well. If you have any questions, let me know. No I don't work for this website, just a happy customer lol.

Regards,

Daniel

I added a premix KNO3 that I purchased from the south side Edmonton hydroponic store and it was suggested to add it at 5 x the dry dose.

My questions :

1./In a heavily planted 30 gallon where I routinely measure 10 ppm Nitrates; why add KNO3?

2./ When I did add the solution (1 cc) the Nitrates went to 20 ppm, doesn't that harm the fish long term.

3./ My admittedly little research suggest that 5-10 ppm No3 is plenty for plant growth, is that not correct.

4,/ Am I totally missing the point?

John

Price?

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