Bucket of IO Solid Block

[Brian Ward]

I have a bucket of IO that is a solid block. It's been opened but doesn't seem much if any has been used out of it. If I chisel off pieces and drop it in water to dissolve, is that OK? Or has it absorbed too much bad stuff and I should just toss it?

[gmerek2]

Mine sometimes gets crusty from the moisture in the air. I drop in the crust blocks.

[smallreef]

I've used chunky salt... Not really noticed any problems,lol

[Rob A]

I would use it.

[YHSublime]

I would use it, but I would try to use it in one whole batch (ie. 200 gallons.)

 

I think if the whole thing is a solid block, I would be worried about certain minerals getting weighed more into different sections, and not having a proportionate distribution in separate batches. That is my complete lack of science theory/explanation.

[zygote2k]

some elements will precipitate out of the solution and you'll have white powder residue in the bottom of the bucket. It won't mix to the stated salinity either.

[Brian Ward]

But that won't cause any issues? I just throw away the precipitate?

[Origami]

But that won't cause any issues? I just throw away the precipitate?

It won't cause issues, but your parameters may need more tweaking if you're used to it mixing up a certain way because some elements may have combined into insoluble precipitate and won't be available for calcification.  

[Brian Ward]

Cool. I'm just adding rock and sand today hopefully so less concerned about specific elements. I'll be sure to check them before I actually add corals.