Let's talk about Alkalinity, Calcium and Magnesium in an SPS Tank
- Thread starter JB NY
- Start date
Aquarist007
New member
Do you mean how to increase mg.
Make sure you measure first---it should be at 1300.
I use Kent Tech-m
Aquarist007
New member
what are your calcium and magnesium levels? and how are you dosing calcium?
Aquarist007
New member
good product
its really important to know your calcium, magnesium , alk and pH levels---can you post these?
Joyt,
why are you dosing so much so fast? 90ml every 2 hrs? thats too much.
I run my dosers 24/7
I dose 11 ml per hour of each.
11ml x 24 hrs = 264 ml per day
Its better to dose slowly all day long then large amount quickly.
I arrived at that value easily. I did a search on RC to find what most people were dosing for my tank size. I started with that figure (9ml per hr I think it was) and fine tuned it from there.
I recently went to dosing Kalk using a reactor to lower my 2 part usage and to raise my pH. Its working beautifully.
Between running a hose to the outside for the skimmer and running Kalk my pH has gone from 77 to 8.1
why are you dosing so much so fast? 90ml every 2 hrs? thats too much.
I run my dosers 24/7
I dose 11 ml per hour of each.
11ml x 24 hrs = 264 ml per day
Its better to dose slowly all day long then large amount quickly.
I arrived at that value easily. I did a search on RC to find what most people were dosing for my tank size. I started with that figure (9ml per hr I think it was) and fine tuned it from there.
I recently went to dosing Kalk using a reactor to lower my 2 part usage and to raise my pH. Its working beautifully.
Between running a hose to the outside for the skimmer and running Kalk my pH has gone from 77 to 8.1
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Aquarist007
New member
I think it was posted somewhere that high levels of magnesium carbonate can interfer with coral uptake of carbonates from calcium carbonate. I think it also went on that in very high levels of magnesium the corals can use it but with much less effeciency then they do with calcium carbonate.
Aquarist007
New member
1500ppm or more
the articles/threads are on my laptop--I'll post them tomorrow
MCsaxmaster
New member
Please do as I'm curious. Suffice it to say, things cannot be quite as you described above
Aquarist007
New member
<a href=showthread.php?s=&postid=11205621#post11205621 target=_blank>Originally posted</a> by MCsaxmaster
Please do as I'm curious. Suffice it to say, things cannot be quite as you described above
lol--I think they were threads from you on magnesium-LOL
won't be the first time I interpreted wrong
Aquarist007
New member
<a href=showthread.php?s=&postid=11205621#post11205621 target=_blank>Originally posted</a> by MCsaxmaster
Please do as I'm curious. Suffice it to say, things cannot be quite as you described above
I checked back on this thread--on page six you wrote a great piece on magnesium---but this was not the thread.
I only have a modest background in chemistry, but usually I am not too far off on comprehending what I have read.
With your obvious fantastic expertise perhaps you can clarify "things not cannot be "quite as your described above"
I'll concede to "quite" as a very tactful way of remarking about this
and ask your help here in clarifying.
cwegescheide
YOU have been ignored!
One thing I notice is my PH is higher when my Alk is low.
gary faulkner
New member
I think that is a given, right?
MCsaxmaster
New member
No, with lower alkalinity the pH will be lower, all other things being equal. If pH here really is lower when the alkalinity is higher, then CO2 must covary with alkalinity in this case. Hence, the CO2 becomes significantly higher as alkalinity climbs higher, causing the reduced pH.
cj
