can i use magnesium sulfide instead of magnesium sulfate for planted tank fert dosing? MGS instead of MGSO4 ? and if so is the dose will be the same? i want to use mgs coz thats the one thats available in my country. i will be waiting for your help guys!
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MGS and MGSO4
- Thread starter abdulaziz
- Start date
Are you sure it is magnesium sulphide ? I very much doubt it. Magnesium sulphide is unstable and in presence of water will decompose to hydrogen sulphide (bad egg gas and 1/2 as toxic as cyanide) and magnesium oxide.
Magnesium sulphate (Epsom salts) is completely different, often available in chemists as a foot soak, laxative and antiseptic.
Magnesium sulphate (Epsom salts) is completely different, often available in chemists as a foot soak, laxative and antiseptic.
Julian
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- 20 Jul 2013
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- 688
I pity the fool who purchases magnesium sulphide..! Please tell me this stuff is not easy to buy?
so its a bad idea to use it! thats good that i asked before i bought it thank you for the fast replay.
unfortunately its easy to buy and they sale it in a 25 kg pack in outdore plants fertilizer shop! why u r wondering is it easy to buy is it dangerous to use in deferent use?
Julian
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As Ian stated, if you mix it with water, you might kill your self.
Concentration
(ppm)
Symptoms/Effects
0.00011-0.00033
Typical background concentrations
0.01-1.5
Odor threshold (when rotten egg smell is first noticeable to some). Odor becomes more offensive at 3-5 ppm. Above 30 ppm, odor described as sweet or sickeningly sweet.
2-5
Prolonged exposure may cause nausea, tearing of the eyes, headaches or loss of sleep. Airway problems (bronchial constriction) in some asthma patients.
20
Possible fatigue, loss of appetite, headache, irritability, poor memory, dizziness.
50-100
Slight conjunctivitis ("gas eye") and respiratory tract irritation after 1 hour. May cause digestive upset and loss of appetite.
100
Coughing, eye irritation, loss of smell after 2-15 minutes (olfactory fatigue). Altered breathing, drowsiness after 15-30 minutes. Throat irritation after 1 hour. Gradual increase in severity of symptoms over several hours. Death may occur after 48 hours.
100-150
Loss of smell (olfactory fatigue or paralysis).
200-300
Marked conjunctivitis and respiratory tract irritation after 1 hour. Pulmonary edema may occur from prolonged exposure.
500-700
Staggering, collapse in 5 minutes. Serious damage to the eyes in 30 minutes. Death after 30-60 minutes.
700-1000
Rapid unconsciousness, "knockdown" or immediate collapse within 1 to 2 breaths, breathing stops, death within minutes.
1000-2000
Nearly instant death
that sound so bad i sent a photo of the product i thinks its not like this. so please check the photo i sent
look at the photo that i sent for what i think is the mgs
xim
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- 19 Mar 2010
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- 499
It's Magnesium Sulphate: http://www.jfcmonro.co.uk/magnesium-sulphate---krista-mgs~219
End of story.
End of story.
this is the product information. so please help me with this product. KRISTA MgS (16% MgO + 13% SO3) is a fully water soluble sulphur and magnesium fertilizer. It is a free flowing, fine crystalline powder which dissolves quickly in water without any residues.
KRISTA-MgS is suited to application through all fertigation systems -hydroponics, drip systems, low throw sprinklers, centre pivots and spray units
KRISTA-MgS is suited to application through all fertigation systems -hydroponics, drip systems, low throw sprinklers, centre pivots and spray units
xim
Member
- Joined
- 19 Mar 2010
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- 499
It seems it's required by law to declare it that way, SO3 equivalent in this case. Even though it's actually SO4.
The same way that PO4 is declared as P2O5.
https://www.agriculture.gov.ie/medi...dlimestone/RegulationECNo2003of2003061015.pdf
"...2. Member States may prescribe that the calcium, magnesium, sodium and sulphur contents of secondary nutrient fertilisers and, where the conditions of Article 17 are fulfilled, of primary nutrient fertilisers placed on their markets are to be expressed:
(a) in the oxide form (CaO, MgO, Na2O, SO3); or (b) in the elemental form (Ca, Mg, Na, S); or
(c) in both of these forms..."
It's even written "Magnesium Sulfate" in the picture you attached.
The same way that PO4 is declared as P2O5.
https://www.agriculture.gov.ie/medi...dlimestone/RegulationECNo2003of2003061015.pdf
"...2. Member States may prescribe that the calcium, magnesium, sodium and sulphur contents of secondary nutrient fertilisers and, where the conditions of Article 17 are fulfilled, of primary nutrient fertilisers placed on their markets are to be expressed:
(a) in the oxide form (CaO, MgO, Na2O, SO3); or (b) in the elemental form (Ca, Mg, Na, S); or
(c) in both of these forms..."
It's even written "Magnesium Sulfate" in the picture you attached.
xim
Member
- Joined
- 19 Mar 2010
- Messages
- 499
OK, to put it to rest, here is the MSDS of Krista MgS: http://www.lambrouagro.com.cy/lambrou/userfiles/files/KRISTA MGS.pdf
It is Magnesium Sulphate.
It is Magnesium Sulphate.
PARAGUAY
Member
Started as a scary one this just glad we have the sponsors who sell and explain their products and freely give advice 
