calcium help

heliguy71 · 12/18/2009, 02:42 PM

hi i have a 120 gallon tank and cannot get calcium over 380.i have been trying instant ocean calcium booster but it is not helping. any suggestions.how fast can i raise calcium without hurting anything?

stingythingy45 · 12/18/2009, 02:51 PM

Actually 4 things need to be correct.It's not wise to just raise calcium.
Alk is very important also
Should be around 7-10 dkh
Mag:1250-1400 ppm
And make sure the S.G is at least around 1.025

bertoni · 12/18/2009, 03:26 PM

100 ppm per day is fine. This calculator will help picking a dose:

http://home.comcast.net/~jdieck1/chem_calc3.html

Most likely, you just need to add more supplement. Were there any signs of precipitation (a white cloud) when you dosed previously?

I agree that alkalinity and magnesium need to be okay, and I think 380 ppm is fine for calcium. The corals might grow a bit more rapidly at 450 ppm.

Randy Holmes-Farley · 12/18/2009, 03:31 PM

You probably are just not adding enough. The directions for it are ridiculous, so ignore them.

I do not know its concentration, but it is likely similar to Kent Turbo Calcium, so use this calculator and use the entry for Kent Liquid calcium (or get another brand of calcium chloride):

Reef chemicals calculator
http://home.comcast.net/~jdieck1/chem_calc3.html

oops, once again, Jonathan is faster on the draw.

12/18/2009, 02:42 PM	#1
heliguy71 Registered Member Join Date: Nov 2009 Location: larsen,wisconsin Posts: 81	calcium help hi i have a 120 gallon tank and cannot get calcium over 380.i have been trying instant ocean calcium booster but it is not helping. any suggestions.how fast can i raise calcium without hurting anything?

12/18/2009, 02:51 PM	#2
stingythingy45 Registered Member Join Date: Aug 2007 Location: MA Posts: 3,296	Actually 4 things need to be correct.It's not wise to just raise calcium. Alk is very important also Should be around 7-10 dkh Mag:1250-1400 ppm And make sure the S.G is at least around 1.025 __________________ Bob Current Tank Info: 90 gallon,mixed Reef,2-250 watt Optix 3 pendants(Phoenix 14K)2-54 watt T5 Super actnics ,ASM G-2 Gate/recirc mods,70 gal. basement sump,20L ref

12/18/2009, 03:26 PM	#3
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	100 ppm per day is fine. This calculator will help picking a dose: http://home.comcast.net/~jdieck1/chem_calc3.html Most likely, you just need to add more supplement. Were there any signs of precipitation (a white cloud) when you dosed previously? I agree that alkalinity and magnesium need to be okay, and I think 380 ppm is fine for calcium. The corals might grow a bit more rapidly at 450 ppm. __________________ Jonathan Bertoni

12/18/2009, 03:31 PM	#4
Randy Holmes-Farley Reef Chemist Join Date: Apr 2001 Location: Arlington, Massachusetts Posts: 86,233	You probably are just not adding enough. The directions for it are ridiculous, so ignore them. I do not know its concentration, but it is likely similar to Kent Turbo Calcium, so use this calculator and use the entry for Kent Liquid calcium (or get another brand of calcium chloride): Reef chemicals calculator http://home.comcast.net/~jdieck1/chem_calc3.html oops, once again, Jonathan is faster on the draw. __________________ Randy Holmes-Farley Current Tank Info: 120 mixed reef