do I have to use CO2 for calcium reactor

[corbett_n]

Do I have to have a CO2 tank to use a calcium reactor. What would happen if I just put some calcium media in a two little fishes type reactor )phosphate reacor, and put a venturi on the powerhead so it blows in air to the reactor. Will this add any calcium to my tank. It is a 75g mixed reef with a few SPS and a clam.

[Nanz]

Nope. You need the CO2 to lower the pH to disolve the media.

[TheH]

The media won't dissolve much in regular pH (7.8 - 8.4). You need something in the range of 6.5 - 6.8 . That's why the CO2 is added; to reduce the pH.

[sedor]

If you want to go cheaper try the 2 part dosing. In the long run I think Ca reactors are cheaper though.

[woowoodengy]

<a href=showthread.php?s=&postid=15517815#post15517815 target=_blank>Originally posted</a> by ryandlf
If you want to go cheaper try the 2 part dosing. In the long run I think Ca reactors are cheaper though.

and easier