This can't be right... alk/ca daily usage?

[KhanhQ83]

Hello fellow reefers. I'm struggling to understand how can my 90g tank with relative small corals using around 1.5 to 2 dKH daily. I see other people with 200g+ tanks with full sized colonies using only .5 to 1 dKH a day. I have mostly LPS and SPS, about 30 sps frags and some small colonies. Ca is around 420, Mg is 1350. Can this be right? or I'm doing something wrong that's causing this. pH ranges from 8.0 to 8.3 daily. I'm dosing 150ml of BRS part A and B a day for upkeep. Isn't this too excessive? A picture is worth a thousand words. Thanks in advance.

 

[KSC]

That sounds right. My 3 year old 90 uses about 3 dkh daily, or 400 ml's a day. I use the recipe that uses 1 cup/gal.

 

[frank180reef]

ya sounds about right to me too

 

[KhanhQ83]

Thanks for the inputs... I guess I'm just too paranoid.

 

[stingythingy45]

Sounds right.I was dosing 300 ml at one time.