Ei Chemicles From Gardens Direct

[Aeropars]

Hi All,

Been pointed in the direction of this site for EI stufs but i cant find Potassium sulphate for a unique sourse of Potassium (K)

I'm not adding Potassium Phosphate any more due to phosphate in tap water so this leaves me with a Potassium Deficieny.

I have found 'Sulphate of Potash' but not sure if this is the same thing or not?

 

[JamesC]

That's it.

James

 

[Aeropars]

Cool. Its exactly the same then is it? SO add the same amount to make a solution as what I have ben doing already?

 

[Underwurlde]

Are you asking is there the same amount of K in Potassium Sulphate as there is in Potassium Phosphate and hence Can I use same dosing levels?

No, I don't think so, recalculate if I were you....

(I can confirm when I get home...)

 

[Aeropars]

Nah, i was asking if its the same stuff and mineral content as there would be from the stuff from Aquaessentials for example.

 

[voo]

I think he's asking is there the same amount of K in sulphate of potash as there is in the Potassium Sulphate as listed in chucks calc.

 

[Underwurlde]

I'm pretty sure it's the same stuff.

So that you can research this further and to confirm, I have copied the info written on the side of the actual boxes of chemicals that I have got from Garden Direct:

Potassium Phosphate (Phosphate of Potash)
Phosphorus Pentoxide (P2O5) 52% (P 22.7%)
(Soluble in water)
Potassium Oxide (K2O) 34% (K 28.2%)

Potassium Nitrate (Salt Peter)
Nitrogen (N) 13%
(Soluble in water)
Potassium Oxide 46% (K 38.2%)

Potassium Sulphate (Sulphate of Potash)
Potassium Oxide (K20) 50% (K 41.5%)
(Soluble in Water)

Hope that helps,

Andy

 

[voo]

I have the same Potassium Phosphate from there, however i dont think it's the mono Potassium phosphate that's used in chucks calc (KH2PO4)

 

[JamesC]

I have the same Potassium Phosphate from there, however i dont think it's the mono Potassium phosphate that's used in chucks calc (KH2PO4)

It is the same thing. Just called a different name.

James

 

[voo]

I have the same Potassium Phosphate from there, however i dont think it's the mono Potassium phosphate that's used in chucks calc (KH2PO4)

It is the same thing. Just called a different name.

James

Thanks for that

Phosphorus Pentoxide (P2O5) 52% (P 22.7%)
This is what made me think it might not be mono, P2 ?

 

[JamesC]

Wikipedia to the rescue - http/en.wikipedia.org/wiki/Potassium_dihydrogen_phosphate

James

 

[Aeropars]

Well, got some Soft fruit food (Sulphate of Potash) from B&Q, sifted out the large bits to ensure its a powder and added 110grams to 1 litre of water. Not all of it has disolved but i think it may do with a bit more shaking.

THe box says: Potassium Oxide K2O 50% (K41.5%) (Soluble in Water)

Is this the same stuff then?

 

[Underwurlde]

Yep.

I found that for my PMDD I was adding so much of the stuff to 1Litre of water that NO WAY way it going to dissovle. So I thought 'aye up, cocked that up then', so back to the on-line calcs for some reassurance and it woluld appear that I was indeed correct in the amount I was mixing up. So everytime I use it I have to stir the dosing mixture up like a mad man, syringe some up quickly in stick it in. I Keep It Simple whereby 1ml == 1ppm dose in the tank.

Andy

 

[Aeropars]

I expect this stuff is not quite as pure and free of 'bits' as the stuff Aquaessentials gets so might end up going back to it for that reason alone but I quite like this experiemnting lark