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TH3C1SC0K1D

Brightwell Aquatics Magnesion-P Magnesium Supplement.

Rating: 2 votes, 5.00 average.
6 Comments
by
TH3C1SC0K1D
, 10-27-2011 at 09:41 PM (5586 Views)
I have been testing my Calcium and Alkalinity levels recently and the numbers just did not sit right with me. So I purchased an Elos Magnesium test kit so I could check my Magnesium level as that is where I believe the culprit lies. Sure enough my Magnesium level was 1200ppm which is about 150ppm below where I would like it to be. So I purchased from Brightwell Aquatics Magnesion-P Magnesium Supplement that I could mix myself and dose into my aquarium.


Now according to the instructions that after mixing my solution that 1ml would raise my Magnesium level in 1 gallon of water by 6ppm. So I have approximately 50 gallons of water so I came to the calculation that 1 ml would raise the Magnesium level in my aquarium by 0.12ppm (6 divided by 50 gallons of saltwater = 0.12ppm. The instructions state that the maximum dosage should be no more then 10ml per day per 20 gallons of water. So I am calculating that I can dose about 25ml per day which would raise my Magnesium level by 3ppm per day (25ml multiplied by 0.12ppm - 3ppm). It will take me about 50 days to get my Magnesium level up at this rate but that is not taking into account water changes on my system. So I guess my question is do my calculations seem correct? I seem to think so. What do you think?







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‎ Tank Entry , ‎ Water Chemistry , ‎ Questions - Need some input

Comments

  1. melev's Avatar
    Your math sounds safe, but you can really bring it up faster than that. Rather than taking two months, I would do it in two weeks. Bring it up 50ppm every four days.

    Since I run bigger tanks, I realize that I can get away with some nutty dosing, but I wouldn't raise it 3ppm per day for 50 days. What's happening is your coralline and Montipora sp. suffer growth and color because the numbers are so low. I've never seen ill effects from dosing Magnesium heavily and quickly. I dose it into the sump's skimmer section so it has time to mix up before it makes it back into the display.

    For safety's sake, why not dose morning and night each day until you get it up to 1350 - 1400ppm. I prefer 1400 for my reef. 1380ppm is the lowest I'll let it get down to.
  2. DJ in WV's Avatar
    25ml aday gets 3ppm = 50day for 150ppm raise with any variables(short math). I really need to get a kit and check mine I have just been basing my two part additions off kh readings and just adding equal part to maintain 220ppm and counting on water changes for mag. really need to pick up a test for cal and mag before I get mine all jacked up Im so cheap :P
  3. TH3C1SC0K1D's Avatar
    Quote Originally Posted by melev
    Your math sounds safe, but you can really bring it up faster than that. Rather than taking two months, I would do it in two weeks. Bring it up 50ppm every four days.

    Since I run bigger tanks, I realize that I can get away with some nutty dosing, but I wouldn't raise it 3ppm per day for 50 days. What's happening is your coralline and Montipora sp. suffer growth and color because the numbers are so low. I've never seen ill effects from dosing Magnesium heavily and quickly. I dose it into the sump's skimmer section so it has time to mix up before it makes it back into the display.

    For safety's sake, why not dose morning and night each day until you get it up to 1350 - 1400ppm. I prefer 1400 for my reef. 1380ppm is the lowest I'll let it get down to.
    I'm just worried that the directions specifically state that if you Magnesium level test lower then 1280ppm that the maximum dosage should be no more then 10ml per 20 gallons of water. That being the case I actually sent an Email over to Brightwell Aquatics to ensure that my calculations are correct and also to inquire why I cannot dose more then 25 ml per day with my water volume. Is is a solubility issue? I'm not sure but I would like to play it safe. I'm going to test again this even before I dose to see if everything is proceeding as I think it should. Sometimes I wish I would have just bought a house sooner so I could get a bigger aquarium. All in due time I guess.
  4. TH3C1SC0K1D's Avatar
    Quote Originally Posted by DJ in WV
    25ml aday gets 3ppm = 50day for 150ppm raise with any variables(short math). I really need to get a kit and check mine I have just been basing my two part additions off kh readings and just adding equal part to maintain 220ppm and counting on water changes for mag. really need to pick up a test for cal and mag before I get mine all jacked up Im so cheap :P
    My though process was exactly the same. I guess that is what happens when you take things for granted and don't actually test. Wish I was testing sooner. I don't have much experience with Magnesium test kits but the Elos test kit was simple and straight forward. The color changes where distinct and I am very pleased with it.
  5. melev's Avatar
    Just to clarify, when I suggested dosing morning and evening, I meant to take that day's worth of additive and divide it evenly, dosing half in the morning and half at night. That way you are dosing gradually and never too much per session.
  6. kayl's Avatar
    Don't forget that some magnesium supplements are magnesium chloride, which can drive your salinity levels up