Raw materials for the 3-part by Randy Holmes-Farley

[Stick-y]

Hello,
We are a group of local reefers and would like to try Randy Holmes-Farley's 3-part recipe. As there are only a dozen of us, we plan to buy the 4 elements of the recipe in 25kg bags. We're wondering if the 4 bags we've found are pure enough. Here are the specifications. What do you think? I hope I gave you enough info's. Thanks a lot

 

[Randy Holmes-Farley]

Those look suitable to me.

 

[Stick-y]

I was a bit worried with the amount of Fe in the Magnesium Chloride, that's not gonna be a problem long term ?

 

[Randy Holmes-Farley]

I was a bit worried with the amount of Fe in the Magnesium Chloride, that's not gonna be a problem long term ?

I don't think so, that's a max specification, not an actual result, and some folks dose quite a bit of iron. Red Sea actually recommends 0.1 ppm, though I think that is just so their kit can detect it.

 

[Stick-y]

Thank you very much, the rest of the team will be well reassured