• You are viewing the forum as a Guest, please login (you can use your Facebook, Twitter, Google or Microsoft account to login) or register using this link: Log in or Sign Up

MnSo4 question for the chemist's.

J

John q

Member
Joined
6 Jan 2021
Messages
2,475
Location
Lancashire
Chemistry isn't my strong point so could do with some advice. I'm trying to source some mnso4 and can get hold of Manganese II Sulphate Monohydrate 98-101% ACS. 250g including shipping will cost me £17.
Alternatively I can buy 50g of Mn 13% EDTA Chelated for £4.99 including delivery.

Are these chemicals similar just with differing Mn contents. Is the cheaper one suitable for aquarium use?

Last question if the 13% edta is suitable how many milligrams would I need to add to a 500ml solution to generate a strength of 0.02 ppm per 60mls dosed in a 240l tank.

Hope the above makes sense.

Thanks.
 
Solufeed Mn 13 EDTA 1Kg £15 - although 1Kg will last a very very long time

1647174511299.png

1647174552331.png

serial dilution is the way to go IMO - I like to use more than 1Gram ( 5 to 10 grams feels about right)
1647174424113.png

1647174459350.png
 
@John q are you thinking of going with the APFUK micro mix and adding additional Mn and Fe DTPA as Happi suggested?
 
Last edited:
@John q keep in mind that one of those is chelated, the other one is not. You should determine if you are going to be using chelated micros or not for your setup. In my opinion it doesn't make sense to mix and match chelated or non chelated. If some is chelated then you should buy chelated for the rest that are available as chelated.

If youre planning to spike an already chelated mix I would buy the chelated Mn to match.

To use chelated or unchelated micros as a whole is a totally different separate discussion for another time :)
 
Wookii said:
thinking of going with the APFUK micro mix and adding additional Mn and Fe DTPA as Happi suggested?
Click to expand...
Yes that's exactly what I'm doing. I already add DTPA Fe to the apfuk micro mix so adding the extra Mn doesn't seem overly complicated or involve a lot of faffing.
Not quite ready to start mixing everything from scratch just yet but happy to tweak what I have. How much of a difference it will make time will ultimately tell.
Hufsa said:
If youre planning to spike an already chelated mix I would buy the chelated Mn to match.
Click to expand...
Thanks @Hufsa I'm assuming the csm+b mix I have is already cleated so adding extra cleated Mn would seem to be the way forward.
I opted for the 50g 13% edta which should be enough for over a years worth of mixes.
 
Last edited:
@John q

500 ml, 60 ml per 240 liter

0.123 gram MnSO4*H2O
Mn 0.02
S 0.011

or

0.307 gram Mn EDTA 13%
Mn 0.02


Solution #1.
make a Concentrated solution of 500 ml

add 1.025 gram MnSO4*H2O
or
add 2.55 gram Mn EDTA 13%

Solution #2
take 60 ml from Solution #1 and add into Solution #2, fill the water to 500 ml, use this Solution at 60ml per 240 liter tank to get 0.02 ppm Mn.
 
Haha yeah totally my fault @Hanuman I just looked at the headline g amount to be added and didn't take any notice of the ml dosage.
 
Do you a link to the chelated Mn @John q - I think I’m going to go a similar route myself for now, as I’m also not ready to start mixing custom micros.
 
You must log in or register to reply here.
Back
Top