Ok I give, help please?

143MPCo · Mar 29, 2015

Randy, for the life of me I've been searching for the last 30min or so and can't find what I'm look for so I need an expert (@Randy Holmes-Farley)...

Tank size 390 (net) gallons

[TABLE="width: 359"]
[TR]
[TD]Test[/TD]
[TD][/TD]
[TD][/TD]
[TD]Current level[/TD]
[/TR]
[TR]
[TD]dKH[/TD]
[TD="align: right"]0.49[/TD]
[TD][/TD]
[TD]6.9dKH[/TD]
[/TR]
[TR]
[TD]Calcium[/TD]
[TD][/TD]
[TD]√[/TD]
[TD]449 ppm[/TD]
[/TR]
[TR]
[TD]Salinity[/TD]
[TD][/TD]
[TD]√[/TD]
[TD]sg =1.026[/TD]
[/TR]
[TR]
[TD]Magnesium[/TD]
[TD="align: right"]0.54[/TD]
[TD][/TD]
[TD]1080ppm[/TD]
[/TR]
[TR]
[TD]Temp[/TD]
[TD][/TD]
[TD][/TD]
[TD]80.1Â°[/TD]
[/TR]
[/TABLE]

Current magnesium level is sitting at 1080ppm, I'd like to bring it up slowly to 1280ppm in 100ppm a day increments over the next few days or however long it might take...
Using BRS Magnesium Mix Solution (magnesium chloride and sulfate) it's calling for 6129ml how much would you recommend I dose per day?
Thanks!

143MPCo · Mar 29, 2015

Think I found the answer:

3145.1 ml
106.3 fl oz
629 tsp

That seems high no?

Reefing Madness · Mar 29, 2015

If you need a total of 6129ml, then it can't be 3145ml a day. 1000ml a day maybe, but not 3145, that doesn't make sense.

143MPCo · Mar 29, 2015

Reefing Madness said:
If you need a total of 6129ml, then it can't be 3145ml a day. 1000ml a day maybe, but not 3145, that doesn't make sense.

I agree, doesn't make sense at all but, that's what the BRS calculator is showing... what would you recommend?

redfishbluefish · Mar 29, 2015

It makes sense if he wants to go from 1080 ppm to 1280 ppm and only raise 100 ppm per day........that means it's going to take two days. A total dose of approximately 6100 mls divided by two days equals approximately 3050 mls. Make sense?

143MPCo · Mar 29, 2015

redfishbluefish said:
It makes sense if he wants to go from 1080 ppm to 1280 ppm and only raise 100 ppm per day........that means it's going to take two days. A total dose of approximately 6100 mls divided by two days equals approximately 3050 mls. Make sense?

I'm not disagree with the math, just want to make sure I don't go over and stay as close to NSW as possible.

redfishbluefish · Mar 29, 2015

You need a whole bunch because you have a big tank....almost 400 gallons. What I'd do is add a gallon (3785 mls), and then retest and take it from there.

Reefing Madness · Mar 29, 2015

redfishbluefish said:
It makes sense if he wants to go from 1080 ppm to 1280 ppm and only raise 100 ppm per day........that means it's going to take two days. A total dose of approximately 6100 mls divided by two days equals approximately 3050 mls. Make sense?

Makes sense, but he's talkin a weeks time frame, not 2 days.

Reefing Madness · Mar 29, 2015

Using simple math, he just needs to dose 875mls a day for 7 days to get what he's looking for.

143MPCo · Mar 29, 2015

Thank you both!!!!!!

I'm going to err on the side of caution and dose 700ml, until I hit my target.

redfishbluefish · Mar 29, 2015

Reefing Madness said:
Makes sense, but he's talkin a weeks time frame, not 2 days.

143MPCo said:
.......Current magnesium level is sitting at 1080ppm, I'd like to bring it up slowly to 1280ppm in 100ppm a day increments over the next few days or however long it might take.........

1280ppm - 1080ppm = 200ppm Ã· 100ppm/day = 2 days

However, regardless....looks like OP is going to take it slow and easy....and in this hobby, there's nothing wrong with that.

Reefing Madness · Mar 29, 2015

Not at all, totally agree

143MPCo · Mar 29, 2015

redfishbluefish said:
1280ppm - 1080ppm = 200ppm Ã· 100ppm/day = 2 days

However, regardless....looks like OP is going to take it slow and easy....and in this hobby, there's nothing wrong with that.

Thx, one question... who's "OP"? lol

Original Poster... hmmm!

redfishbluefish · Mar 29, 2015

143MPCo said:
Thx, one question... who's "OP"? lol

Original Poster... hmmm!

You are correct....that would be you....the Original Post(er)!

Randy Holmes-Farley · Mar 29, 2015

As folks have noted, raising magnesium can take a huge amount of additive.

Almost never does one need to raise magnesium rapidly, and there is concern for impurities in the magnesium salts (like ammonia), so going slow is a good plan. A week in a fine plan.

143MPCo · Mar 29, 2015

Randy Holmes-Farley said:
As folks have noted, raising magnesium can take a huge amount of additive.

Almost never does one need to raise magnesium rapidly, and there is concern for impurities in the magnesium salts (like ammonia), so going slow is a good plan. A week in a fine plan.

Noted! Thank you Randy!