Just got some K2SO4 (Potassium Sulphate) - The Planted Tank Forum
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post #1 of 3 (permalink) Old 03-22-2005, 11:54 AM Thread Starter
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Just got some K2SO4 (Potassium Sulphate)


Well I managed to get 1kg in the UK...what a mission.

I cant remember what grade it was but for this purpose it shouldnt matter should it?

I imagine it doesnt have to be lab grade?

says it is Potassium sulphate A.R.

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post #2 of 3 (permalink) Old 03-22-2005, 01:31 PM
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hi there.. where did u get your K2so4 in england?
i can find it but only not stated as k2so4 yours proberly is pretty pure..
it will matter how much you dose because your plants will use so much or so little.. and idealy you want to get the same PPM as any of the recommended PMDD products to keep the rule of dosing etc.. but again you can work on your own method.. im sure the actuall product is good enought for your tank.

have u got anymore specific info on the product.. any stats from the back of the pack?

glad you got it tho i take it you know where to get everything else?
have u got CSM from the US? im still awaiting mine :S

i have mg, i know where to get kno3, and im waiting for the CSM, then all i need is phos now. which i think i have.. and of course the k2so4.

good luck mate, try mixing with to the chuck gadd formula, you 'should' get about the right. do u know the percent of k2so4....
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post #3 of 3 (permalink) Old 03-22-2005, 01:53 PM Thread Starter
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Well I managed to find this company - http://www.nbsbio.co.uk

They do everything we need so I purchased 1kg of K2SO4, I spoke to Mark who was very helpful. I dont have any more details other than its what I need. He wasnt sure if its a powder of granules but it will mix in water so i'm not too fussed.

I got my KNO3 off of ebay and bought a load but this company sell that too. I've got my PO4 in the form of Fleet Enema? But i havent used it yet.

I've got Flourish and TMG but I think its better to use the TMG because it contains 0.79% K already...and my tap water in essex is really hard.

How can i test for potassium? my test kit doesnt have a test for that.

I posted another question regarding ferts because i'm dosing iron, kno3 and now k2so4 seperately but i need to know when to dose the micro's TMG. I think i'll start off with 1 dose split in half twice a week then increase it but knowing how much K my plants are using would be real useful!
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