How to dose less than one drop (Amino acids)

[Michel]

I recently started dosing amino acids in my 10g nano reef but the bottle tells me to dose "one drop" per 29 gallons of water.
This means I need to dose 1/3 of a drop from the bottle.
The bottle also tells me not to dilute it so I can't just add a few drops to a little bottle of water and add a few ml daily.

Right now im taking 1ml water from the aquarium, add one drop of amino acids and dose 0.4ml to my 10g and dose the other 0.6ml to my other 20g nano.
But I don't really need/want to dose it to my 20g nano so im looking for another solution.

 

[Dkmoo]

What amino is this? Most of the common ones stick to a concentration for 4 to 5 ml per 25G so this sounds odd

 

[Michel]

Aquaforest AF Amino Mix (10ml)

 

[elysics]

They probably tell you not to dilute it because it would grow all kinds of stuff if you dilute out and just keep it in a dosing container in your warm cabinet. But if you dilute enough for a week in for example a syringe, cap/tape it shut and store it in your fridge, that should be fine.

 

[Muffin87]

I would try diluting it with pharmaceutical grade purified water. Chances of something growing within water that purified are really low.