What levels of magnesium kill inverts

[Hallowhead]

Howdy,

I am inquiring to understand what levels of magnesium kill inverts, both on the high end and or low end.

 

[Subsea]

Howdy,

I am inquiring to understand what levels of magnesium kill inverts, both on the high end and or low end.

I doubt that low or high magnesium would effect inverts much. With SPS corals it’s a different story.

High magnesium with high alkalinity will create a snowstorm of magnesium precipitate in your water.

 

[Gumbies R Us]

The is might not be the answer to your question but is an interesting read regarding magnesium testing.

Just say NO to magnesium testing: RMM is born

OK, this thread has been many years in the making, and I'm posting it here since folks in the chem forum are probably already tired of all the threads relating to problematic magnesium testing. I'm going to propose a method, let's call it the Randy Magnesium Method, or RMM for short. All good...

www.reef2reef.com

 

[Lyndi]

I have tried, at least 5 times, in the last year, to not dose magnesium in my mixed reef. My mag was typically coming back in the 1300’s on FM ICP. If I go a week without dosing, my mag seems to come up in the 1250 range on my Red Sea kit and my snails and crabs are sluggish and or sometimes not moving and even dying off. On the opposite end, my very first ICP, my magnesium came back at 1573. that prior week I had noticed the same, very sluggish crabs and some snails dying off AND I had a shrimp die and a RFA die.
To me, my tank and inverts seems happiest above 1325 and up to 1450. The monthly ICP really helps to manage ongoing dosing levels

 

[Stomatopods17]

It could be something else. Heavy metal poisoning and stray voltage would be the first things I'd concern myself with.

I have a harlequin shrimp in a 2 gallon that i literally never dosed or tested a single time in its existence for 1 and a half years, idk what it is im doing right but apparently doing nothing but top off is going very well. Inverts are hardier than many give credit for, especially tidal ones where there's no way each pool they travel between without acclimation keeps the same parameters.

Inverts get sluggish around molts and most of them don't live long just in general. They don't really care much about trace element levels you just want to keep an eye on temperature swings especially when it gets cooler at night and your heater fries them when the sun comes up.