help me understand

[12PMER]

Do you have a recommended brand of lanthanum chloride or GFO? One you've used with success???

I ordered the ultra low hanna checker today.

I have a skimmer, tunze 9001 as the tank I have only allows certain ones to fit.

Ever use or recommend anything like this..

 

[jda]

Lan Chloride is lan chloride. There are hobby ones and you can get some used for swimming pools. Any of them should be OK. Just start with a really small dose. GFO can work too, but you might need gallons of it.