You pick the change poll

[michika]

Originally Posted by Aquattro

Let's expand on this. What is "very low" and what would the problem be? Mine is about 1150ppm and I don't really see any problems. Looks like a lot of work to chase a number without understanding the problem.

I wouldn't use the word problem as much as I would say it could be holding you back in terms of growth. In my tank Mg is directly tied to the speed at which my clams grow new mantles and how quickly I see growth in most of my SPS.

Magnesium helps in the uptake of Calcium and alkalinity (like vitamin D in bones), or at least that's how I've always understood it.

[Aquattro]

Originally Posted by michika

I wouldn't use the word problem as much as I would say it could be holding you back in terms of growth. In my tank Mg is directly tied to the speed at which my clams grow new mantles and how quickly I see growth in most of my SPS.

Magnesium helps in the uptake of Calcium and alkalinity (like vitamin D in bones), or at least that's how I've always understood it.

That makes sense from what I've seen in other's tanks. But I'm happy holding growth back with SPS. Growing faster isn't always a good thing

[Madreefer]

Originally Posted by michika

Magnesium helps in the uptake of Calcium and alkalinity (like vitamin D in bones), or at least that's how I've always understood it.

I have the same thoughts. Does'nt the growth of coralline algae some how have something to do with Mg?

[Aquattro]

Originally Posted by Madreefer

Does'nt the growth of coralline algae some how have something to do with Mg?

Something I've noticed recently is that I have very little coralline in the DT. However, my frag tank is covered. Same water, so I've been attributing it to light.