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It's missing P (in the N-P-K) since the PMDD is based on a Phosphorus limited dosing.

Most do not recommend an all-in-one mixture since you can't make any adjustments with all the ingredients mixed together. The dynamics of a planted tank (especially a high light/tech tank) often requires you to tinker with your macro dosing levels so you want to have the N-P-K sources separated.

It takes marginally longer to dose, but allows for much more flexibility.
 

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turtlehead said:
I see, I want it to be convient though and not too messy, can I mix it up and store it? what do you guys think for ADA brighty k lights?
You can dry dose all your macros. Just use the Fertilator to figure out what the amount is for the desired dosage for each. Order a set of mini measuring spoons from Greg when you order the macros.
 

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turtlehead said:
do I actually even need nkp since its provided in fish waste and food? and flourish has some of it?
I have riccia and hairgrass, dosing 1.5ml of flourish every monday and saturday, 1ml of iron wednesday
100% tap water
Whether you need to dose macros is totally dependant on your tank setup. Low light with slow growing plant should be sustainable with just fish waste. Get above 2.5 wpg and you'll start to need CO2 and macro dosing (as well as the micros from Flourish/TMG/CSM+B).

With you growing hairgrass, it leads me to believe you're getting into a higher-light setup which will need supplemental dosing.
 

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Actually, Flourish has very little in the way of N-P-K as it's a trace element (micro) supplement. Here's what the Seachem site says...
Flourish™ is a comprehensive plant supplement for the natural freshwater aquarium. It contains a rich assortment of important micro elements, trace elements and other nutrients. These include calcium, magnesium, iron and other important elements that have been shown to be beneficial to aquatic plants. For macro element (NPK) fertilization, use Flourish Nitrogen™, Flourish Phosphorus™ or Flourish Potassium™ as needed.
However, going the Flourish-line route will get expensive which is why ordering dry chemical ferts from gregwatson.com is so highly recommended.

Riccia is a N hog so unless you grossly overfeed your fish you will need to supplement macros.
 

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KN03 is your N source from Nitrate (NO3)
KH2PO4 is your Phosphorus source from Phosphate (PO4)
K2SO4 is your Potassium source

Like I said above, you may very well be fine for K just dosing the KN03 and KH2PO4, but the cost of the K2SO4 is minimal, and there aren't too many sources for it unless you live in farm country.

With your 10g tank a pound of each will last you quite a while. And you can always mix up liquid batches for each macro if you want. I do just that and have a printed chart that I can refer to get ml/ppm amount for each of my tanks.

The only thing that's generally discouraged is mixing up a master N-P-K solution since once you do you're stuck with dosing whatever ratio that solution is mixed at.
 
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