question on ferts

ZLogic · 10-16-2012, 05:10 PM

This may sound silly, but i was looking at the Nitrogen on PFerts and it says it contains Urea and Potassium Nitrate. What is Urea and if it's potassium nitrate, is there still a need to dose potassium?

let's.get.tanked · 10-16-2012, 06:51 PM

Synthetic urea is created from ammonia and co2. When nitrogen is mixed with urea it becomes water soluble. Urea is found in most plant and lawn fertilizers. Potassium nitrate is the source of mineral nitrogen and the urea is what lets the plants absorb it. Potassium (K) is a different element altogether.

BruceF · 10-16-2012, 07:10 PM

KNO3. Probably you won't need more potassium. Some people skip the no3 part and use KCL instead. (No Salt) Or KH2PO4.

Diana · 10-17-2012, 03:39 AM

If you need to dose a fair amount of KNO3, then the K is probably enough.
In my high stocked tanks I do not need to dose much N, so I use K2SO4 for the K, based on plant deficiency symptoms.

10-16-2012, 05:10 PM	#1
ZLogic Planted Tank Obsessed (View User Tanks) PTrader: (2/100%) Join Date: Aug 2011 Location: Denver, CO Posts: 367	question on ferts This may sound silly, but i was looking at the Nitrogen on PFerts and it says it contains Urea and Potassium Nitrate. What is Urea and if it's potassium nitrate, is there still a need to dose potassium?

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10-16-2012, 06:51 PM	#2
let's.get.tanked Algae Grower (View User Tanks) PTrader: (0/0%) Join Date: Aug 2012 Location: Pittsburgh Posts: 16	Synthetic urea is created from ammonia and co2. When nitrogen is mixed with urea it becomes water soluble. Urea is found in most plant and lawn fertilizers. Potassium nitrate is the source of mineral nitrogen and the urea is what lets the plants absorb it. Potassium (K) is a different element altogether.

10-16-2012, 07:10 PM	#3
BruceF Planted Tank Enthusiast (View User Tanks) PTrader: (2/100%) Join Date: Aug 2011 Location: Centennial,Co Posts: 547	KNO3. Probably you won't need more potassium. Some people skip the no3 part and use KCL instead. (No Salt) Or KH2PO4.

10-17-2012, 03:39 AM	#4
Diana Planted Tank Guru (View User Tanks) PTrader: (0/0%) Join Date: Jan 2010 Location: Contra Costa CA Posts: 5,010	If you need to dose a fair amount of KNO3, then the K is probably enough. In my high stocked tanks I do not need to dose much N, so I use K2SO4 for the K, based on plant deficiency symptoms.