Well I am a believer in Manganese, especially since finding out that Triton sells it as an individual element solution. It's sold at the low low price of 32 dollars for 100mL. So I started thinking, why not make some of my own. Looking on eBay, you can buy 100grams of Manganese Chloride for 15 dollars.
So the question is, how much Manganese is needed per Liter of solution? Well Triton's results on Mark's tank gave me a clue - the target is 2ug per Liter. Since he has zero Manganese, his correction dose is 11.36mL for his 150 gallon tank.
So some back calculating comes to 150Gallons = 567.8L
567.8L X 0.000002g = 0.001136g this is the total dose of Manganese ions to bring 150gallons up to target level
Dividing the amount in grams per ml Triton Solution gives you:
0.001136g/11.36mL = 0.0001g/ml Manganese ions by weight per ml
Convert to Grams per L
0.0001g/ml X 1000 = 0.1g/L Manganese ions by weight per L
Manganese Chloride Tetrahydrate is ~28% Manganese by weight.
If I need 0.1G Manganese, I need 0.36g Manganese Chloride Tetrahydrate
Dissolve 0.36 Manganese Chloride Tetrahydrate in 1L water.
Daily dosage per Triton appears to be 0.00633mL per gallon of system volume
For my 195 gallons that would be 1.234mL per day.
Ok...its been a long time since college chemistry, did I calculate this right? It seems like a tiny amount of Manganese Chloride per Liter. If it's right you could buy enough for over 100L or 600+ years worth.