Question on dosing MgSO4. - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 02-26-2007, 11:19 PM Thread Starter
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Question on dosing MgSO4.

I have been having all the same problems seen here-

https://www.plantedtank.net/forums/wa...d+plant+growth

so i am going to try and dose MgSO4 1/4 tsp 3 x week.

If my math is right 1/4 tsp MgSO4 = 1 gram and in 10 gallons of water that would be = 2.61 ppm which would put me in the 2-5 ppm range.

My question is should i does it 3 x week and if not how often should i does it.


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post #2 of 2 (permalink) Old 02-27-2007, 05:03 AM
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Hi Will

I don't know if this will make any difference to what you are trying to do, but...

I just plugged your numbers in Chuck's fert calculator and I got 3.53 ppm Mg. http://www.csd.net/~cgadd/aqua/art_p...osage_calc.htm

This is what I did:
Amount to add: 0.25 tsp (the calculator converts tsp to 1.35 grams)
Amount of water to mix with: 1 mL
Tank Size: 10 gallons
Each ML of this solution that you add to your tank will add: 3.53 ppm Mg
Suggested Target Level: 5 to 10 ppm Mg

Chuck's calculator uses MgSO4.7H2O for magnesium sulfate. Chuck says that 1 tsp is 5.4 grams or 1.35 grams for tsp.

The ppm difference is that you used tsp = 1.0 gram instead of 1.35 grams.

Are you using Greg Watson's Plantex CSM+B? He adds an equal part of magnesium sulfate to his trace when he mixes it. How To Dose Plantex CSM + B
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