Sulphate levels

swackett

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Joined
29 May 2008
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439
Location
Epsom, Surrey
Just wondering if you can have too much sulphate in an aquarium and is it harmful to fish?

I dose mgso4 and am thinking of dosing k2so4 as well, and so will be adding lots of sulphate (so4) to the tank water.

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zozo

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16 Apr 2015
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7,308
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Netherlands
You need a pretty high dose for it to be harmfull.. I've red reports from natural streams having 275ppm during the spring time flooding from snow meltwater. So even nature can periodicaly take some pretty high levels.. In trout farming sulphate levels are aimed to stay bellow 75ppm. I have no idea what the symptoms are when it's higher, if fish die or just not spawn healthy.. But to get this high with adding pottasium or magnesium sulphate you would need to add quite a lot, which you likely wont.. :)
 

swackett

Member
Joined
29 May 2008
Messages
439
Location
Epsom, Surrey
You need a pretty high dose for it to be harmfull.. I've red reports from natural streams having 275ppm during the spring time flooding from snow meltwater. So even nature can periodicaly take some pretty high levels.. In trout farming sulphate levels are aimed to stay bellow 75ppm. I have no idea what the symptoms are when it's higher, if fish die or just not spawn healthy.. But to get this high with adding pottasium or magnesium sulphate you would need to add quite a lot, which you likely wont.. :)
Okay I am looking at levels of 20ppm or so, so it sounds pretty safe at that level then.
 
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