Magnesium chloride?

[gregzz4]

If you're not using a doser, not much of this matters;

I've used Dead Sea Works Mag Chloride in the past along with Epsom Salts from Walmart and such.
I found the mix would not 'stay' mixed in my dosing container. It would settle out the next day or so. This deposited stuff would plug the pickup tube.
I then tried using J&L's MC with ES and it still settled out. It's the ES that's the issue.
I tried the DSW MC with J&L's Mag Sulphate and it was good.
I've since switched over to J&L's Reef Crest Mag part C stuff.
After mixing, I pour the product into my dosing container leaving the small amount of crystals that just won't mix behind. This mix stays mixed. Period.

I wrote I use J&L's part C. I buy the pouches and they are crystals, not flake.

So Doug, I'd recommend you buy the crystals, not the flake, based on my mixing, settling, and sediment experience.

160g MC and 125gMS makes 20oz. I mix 6 packs to make 3550ml. This works perfectly with Randy's formula for dosing.

If you buy it bulk from J&L, no you're not seeing things.
They sell the MC in 1250 and 2500g jugs, and the MS in 1600 and 3200g jugs. This is totally backwards from the 160g and 125g portions in the pouches.
Jeff tells me this is because people blend bulk at their own discretion. I think it's a mistake and they should reverse their jug sizes.
You'd get 20 doses from each jug; enough to perfectly mix 11.8 litres.
Instead you'll run out of 1 before the other, thus having multiple jugs on the shelf.

[gregzz4]

And when I say Doug, I mean Tony

[Delphinus]

Originally Posted by gregzz4

And when I say Doug, I mean Tony

No worries Mike!

[Dez]

I can’t remember who I got my stuff from. It was from somebody from this forum 9 ish years ago. He shipped it to me in a box in a giant black garbage bag. He’s from BC. I still have some and I haven’t run out yet. I may run out in the next year or 2. I don’t even bother mixing or measuring anything. I just stick the flakes directly in my sump. I did some testing years ago and when I was trying to raise my Mg, I ended up putting I think something like 17 lbs of flakes in my tank with no effect on anything. It’s somewhere in my build thread. So now if I remember to test once every few months, if the Mg is a bit low, I’ll just stick a few mugs right into my sump and let it dissolve on it’s own.