Question about "Durvet" Levamisole and dosage calc

[raecarrow]

Has anyone ever used Durvet brand Levamisole?

If it will do the job of curing my fishes, I will be picking some up this weekend.

[raecarrow]

I have another problem. I have a 10 gallon tank and a 5.5. The Levamisole dosage calculator says I will need .019 Tsp for the ten gallon and .01 tsp for the 5.5 gallon. Has anyone figured out any tricks for getting this small of a dosage? I think it would be quite weird to try to halve the amount of powder over and over until I have the right amount. Plus, I don't have a gram scale. What do you guys do to get the correct dosage?

[raecarrow]

Ok I've come up with a plan for dosing my tanks. Could someone who knows what they are doing double check my math.

The smallest readily available unit of measure I have is a 1/8 tsp. So the question is how many cc's will I need add to the 1/8tsp of levamisole to create a 1cc per 1 gallon dosage.

According to chiefkeith's calculator, 18.925 tsp are needed per 10,000 gallons.

Code: Select all

   1gal               1cc            66cc
------------  =  ------------   =  ------- 
.0018925tsp      .0018925tsp       .125tsp

So, according to my calculations, I will need to add 66cc's to each 1/8tsp to create a 1cc per gallon dosage.

What do you guys think? Is this math correct?

[chefkeith]

Just use the stock solution calculator.

Enter the amount of stock solution. (I use bottled water which is 500 ml's as a starting point)

Enter the dosage size you want (1 tablespoon = 14.79 ml's)

Then enter how much water each dosage should treat. (10 gallons)


If 1/8 of a teaspoon is the smallest measurement unit you have, then you could reduce the amount to stock solution to 100 ml's.

Just put about 1/2 cup of water into the 500 ml water bottle (1/2 cup = 118 ml's). The water measurements don't need to be super precise.

[raecarrow]

I entered 66mL as the stock size, 1mL as the dosage size and 1 gallon as the amount to be treated. It told me that I should add .124 tsp of levamisole to 66mL. I was pretty close!

[raecarrow]

How long is a dosing solution good for? Can I save it from one time to the next if I am doing a series of doses or should I remake it every time?

[chefkeith]

Great job!

The solution should be good for a few months if it's refrigerated.

[raecarrow]

LOL I'm just glad that I can do the math still!

I'm glad it can be kept in the fridge, I would hate to have to make up a special batch for each dose. I'll just remake it each time I do a cycle.

Thanks!

Oh here is a link to the Levamisole I was looking to buy over the net. Does this look alright?
http://www.farmandfleet.com/catalog/pro ... 047528&p=1

[chefkeith]

That's the right stuff.

[raecarrow]

Sweet!

Thanks for all the help.