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Calcium is 300. Why would we need to worry about the mag?TLR most of the posts. I bet it's your magnesium. Check that, I bet it's low.
Mag ties Alk and Ca together. Always check these big 3.
Yep. He obviously has a parameter problem.The mag is what holds the ca and alk together. If i understand correctly, with low mag your going to drop ca and alk faster and i think it helps the corals take in the mag amd alk
Strip the water, now the light is penetrating? What would water with a little bit of no3 or po4 look like?It can take a few months for chemipure to actually strip everything out of the water. Im gonna go with the previous statement of stripped water to fast and now to much light is penetrating the water column and bleaching coral. Leather and euphyllia are easy to bleach zoas arent easy to bleach. That and the calcium i think its a combo of both.
Yep. He obviously has a parameter problem.
Listen, i didn't suggest anything other than removing the chemipure. He asked why his coral was melting? He presented API test kit results. I gave him my assesment. Did anyone ask the 1500+ other variables that could be at play? No. But you're speculating.If you agree with this person's statement, then I'm confused as to why you'd question the need to worry for mag? Those are the crucial three we all have to test for, agreed?
If calcium is 300, which obviously is low, and the lps don't show for it in growth, dosing more and more wont do a thing. Something is throwing the balance off and more than likely-I feel-its Magnesium. It's easy to blame the Ca being 300 as the culprit, but why is it so low? Simply under dosing? Corals growing too quick and up taking too much?
Mag is needed to keep Alk and Ca in balance and to prevent it from crashing out/precipitating while in the water.
A couple of times my crashes are caused by low Mg, and more often than not people over look magnesium because they feel it's not as important as the other two. I will never again assume magnesium is present enough.
Also RFH suggests in his 2 part formula to add Mg when one is done with each gallon of 2 part. I don't follow that anymore. I test it regularly and add as needed.
http://www.advancedaquarist.com/2003/10/chemistry
Your pH is a bit on the low side too, lower ph dissolves coral skeleton (think Ca reactor, but the pH in a Ca reactor is usually 6.4-6.7)
Oh and btw, I've watched my lps melt before my eyes each day when I failed to test for mag regularly. What really prompted me to check mag was... GSP! As much as I hate GSP, I keep it around because that was literally retracted and dying daily too. As soon as mg was upped, it was healthy again.
I keep it as my canary in the tank.
It stripped his water of p04 and n03 to fast for the coral to acclimate. With little excess nutrients the light can penetrate the water more because there isnt as much impurities in the water.Strip the water, now the light is penetrating? What would water with a little bit of no3 or po4 look like?
I agree 100% mag could be the culprit but no need to argue on this guys. We are here to help. Some people completely space different things which is why a forum is great you get a view on every aspect.If you agree with this person's statement, then I'm confused as to why you'd question the need to worry for mag? Those are the crucial three we all have to test for, agreed?
If calcium is 300, which obviously is low, and the lps don't show for it in growth, dosing more and more wont do a thing. Something is throwing the balance off and more than likely-I feel-its Magnesium. It's easy to blame the Ca being 300 as the culprit, but why is it so low? Simply under dosing? Corals growing too quick and up taking too much?
Mag is needed to keep Alk and Ca in balance and to prevent it from crashing out/precipitating while in the water.
A couple of times my crashes are caused by low Mg, and more often than not people over look magnesium because they feel it's not as important as the other two. I will never again assume magnesium is present enough.
Also RFH suggests in his 2 part formula to add Mg when one is done with each gallon of 2 part. I don't follow that anymore. I test it regularly and add as needed.
http://www.advancedaquarist.com/2003/10/chemistry
Your pH is a bit on the low side too, lower ph dissolves coral skeleton (think Ca reactor, but the pH in a Ca reactor is usually 6.4-6.7)
Oh and btw, I've watched my lps melt before my eyes each day when I failed to test for mag regularly. What really prompted me to check mag was... GSP! As much as I hate GSP, I keep it around because that was literally retracted and dying daily too. As soon as mg was upped, it was healthy again.
I keep it as my canary in the tank.

I also agree 100%Listen, i didn't suggest anything other than removing the chemipure. He asked why his coral was melting? He presented API test kit results. I gave him my assesment. Did anyone ask the 1500+ other variables that could be at play? No. But you're speculating.
For what it's worth, im not going back and forth with you.
Magnesium ties together calcium and alk. Yes. Great. If you have a suggestion on what the guy needs to do, go for it.
I agree 100% mag could be the culprit but no need to argue on this guys. We are here to help. Some people completely space different things which is why a forum is great you get a view on every aspect.![]()
If I told you my calcium is 350ppm, could you tell me what my magnesium is?I don't think anyone is arguing, but it's easy to misconstrue written text.
I read two totally contradicting statements: 1) why check magnesium (perhaps meant as "why is it important to check magnesium?") and then 2) after your explanation as to why magnesium is needed then agrees with a yep, so those two statements don't make sense.
Anyway, good luck OP. I feel youd find your answer if you test a little more.
No, but that's why I suggested he test it in my first postIf I told you my calcium is 350ppm, could you tell me what my magnesium is?
Actually, you speculated it was low.No, but that's why I suggested he test it in my first post
If i read correctly the op asked why test mag. I responded with why and said that it is probably the culprit or part of it. The guy that mentioned testing mag i believe said yep as in i was correct on why mag is important.I don't think anyone is arguing, but it's easy to misconstrue written text.
I read two totally contradicting statements: 1) why check magnesium (perhaps meant as "why is it important to check magnesium?") and then 2) after your explanation as to why magnesium is needed then agrees with a yep, so those two statements don't make sense.
Anyway, good luck OP. I feel youd find your answer if you test a little more.

I'm happy that we are full of what is and what isn't. None of you are suggesting the appropriate approach to fixing the issue. I think the moderators are having a blast watching us beat a dead horse.If i read correctly the op asked why test mag. I responded with why and said that it is probably the culprit or part of it. The guy that mentioned testing mag i believe said yep as in i was correct on why mag is important.![]()
Nvm i just reread amd i see what your seeing. Im not sure what the meaning of the posts were for now. Im a bit confused lolIf i read correctly the op asked why test mag. I responded with why and said that it is probably the culprit or part of it. The guy that mentioned testing mag i believe said yep as in i was correct on why mag is important.![]()
Same guy asked why check mg and responded with yep.If i read correctly the op asked why test mag. I responded with why and said that it is probably the culprit or part of it. The guy that mentioned testing mag i believe said yep as in i was correct on why mag is important.![]()
Yeah i read that. Not sure what he meant. But either way we are all here to help! Thanks for putting another set of eyes on the thread!Same guy asked why check mg and responded with yep.

Actually, you speculated it was low.
For example, my calcium dropped to 350ppm. But my magnesium test showed 1500+ magnesium. My high magnesium is because of a shoddy bucket of bad(opinion) salt mix.

