Magnesium Calcium dosing

[snyderman99]

Hey everyone!

I recently got a Neptune trident system (new) and can’t seem to keep my calcium up. When I first started testing my calcium was pretty low and so was my magnesium so I dosed them individually until they were at a level I was okay with. Now I’m trying to 2 part dose and I can’t seem to keep it up. I’m dosing around 1 ML of my part 1 to keep my alkalinity in the right range but my calcium and magnesium is dosing around 15 MLs. This seems very wrong and I am starting to feel like there might be testing errors? Does anyone have any suggestions?

 

[Peer.Boerner]

Your salinity seems low. Would expect it to be 35 ppt. Calcium at ~400 and Alk at 8.42 and Mg at 1378 is very good. Maybe with higher salinity you’d dose less calcium? Curious what others think

 

[snyderman99]

Your salinity seems low. Would expect it to be 35 ppt. Calcium at ~400 and Alk at 8.42 and Mg at 1378 is very good. Maybe with higher salinity you’d dose less calcium? Curious what others think

Yeah! I like where the numbers are at now I’m just confused why I need so much part 2 when I need only 1 ml of part 1. The salinity might not be fully accurate I’ll have to check it when I get home

 

[Uncle99]

With salinity on point, get MG up to say 1365ppm first, then retest, then adjust CA and or Alk.

I find when MG is low, it’s hard to get dialed in.

Always check salinity first or every thing is out somewhat.

 

[Randy Holmes-Farley]

What product are you using?

What size tank?

 

[snyderman99]

What product are you using?

What size tank?

NAF Two-part Set

Premium reef supplements & livestock. •NAF Two-part •NAF - Reef Bull

notafeesh.com

And I have a 90G tank with about a 20G sump

 

[Randy Holmes-Farley]

Both of those doses are extremely low. It hardly seems worth doing at all, if I am understanding correctly. Am i missing something?

Their calculator says that adding 1 mL to 100 gallons of water only boosts alk by less than 0.02 dKH per day. At this incredibly low dose, water changes and salinity changes will mess substantially with the apparent demand.

For calcium, the 15 mL is presumably onl only adding 0.1 ppm per day.

NAF Two-part Set

Premium reef supplements & livestock. •NAF Two-part •NAF - Reef Bull

notafeesh.com