Why so hard and not useful

[Blue Ring Octopus]

Lugol's Solution - Advanced Iodine

OverviewBrightwell Lugol's is an extremely powerful iodine/iodide solution. It should only be used by advanced aquarists. US regulations do not permit the sale of Lugol's Solution in sizes larger than 30mL Instructions and Guidelines Determine the iodine concentration in the aquarium using an...

www.bulkreefsupply.com

Why does these droppers always get so hard and are not useful anymore.
Does anybody have a link of the droppers they might use instead?
Thanks in advance

 

[FMF0331]

I hate them too, they get hard and crack.
I went to hobby lobby and got these.

 

[Blue Ring Octopus]

Great idea, I will do that.

 

[kevgib67]

Lugol's Solution - Advanced Iodine

OverviewBrightwell Lugol's is an extremely powerful iodine/iodide solution. It should only be used by advanced aquarists. US regulations do not permit the sale of Lugol's Solution in sizes larger than 30mL Instructions and Guidelines Determine the iodine concentration in the aquarium using an...

www.bulkreefsupply.com

Why does these droppers always get so hard and are not useful anymore.
Does anybody have a link of the droppers they might use instead?
Thanks in advance

Same, I just bought another eye dropper when the one it came with wouldn’t work anymore.

 

[Randy Holmes-Farley]

The I2 in Lugols is reactive with many materials, including rubber. That’s a main reason I do not recommend it for dosing reef tanks.

 

[MajorDad74]

Buy them in bulk from Amazon or elsewhere. They’re cheap.

 

[Blue Ring Octopus]

The I2 in Lugols is reactive with many materials, including rubber. That’s a main reason I do not recommend it for dosing reef tanks.

So this begs the question what type should we use?

 

[Randy Holmes-Farley]

So this begs the question what type should we use?

Type of eyedropper or type of iodine?

For dosing, I recommend (and use) potassium iodide.

For the dropper for Lugols, the polyethylene ones that others posted should hold up well.