dKH ???

[second_decimal]

where do you guys keep your dhk at? i used to run around 9 or so and after adding a calcium rx and dosing kalk i am running around 16. a little high i think but i have read that a higher dhk will encourage coral growth so i am thinking about leaving it.

 

[barnett8]

My dKH is around 10-11 most of the time. Just where I like it.

 

[leeweber85]

Anymore than 10-11 dKH is pretty dangerous...a lot of sps will respond negatively to higher levels (alk burn). U would stop dosing kalk or turn down your reactor.

 

[second_decimal]

ok .. thanks for your input. i knocked off co2 addition until further notice

 

[gavinbree]

You shouldn't need to encourage coal growth,let nature takes its course as it was intended, you should be keeping NSW levels on all perameters IMO.

 

[moo0o]

7.8

 

[george albert]

mine stays about 8

 

[cnaegler]

I keep mine @ 7dkh

 

[Mykel Obvious]

9 dKH

second_decimal, with that high a dKH, what is your calcium reading??

 

[bill-fit]

10dkh

 

[Mikeeee]

10dKH, Cal 425. New calcium reactor.. think i got it dialed in now . Might have to set it back a bit.. i too like my dKH to be at 8 but my sps dont seem to mind 10dKH so we'll see.

 

[60Cubed]

9 dkh. I used to keep it around 10-11 dkh. Corals seem to like the 9 better.

 

[cnaegler]

When my dkh was 10 or higher, i tended to have STN. Haven't had a problem since i lowered it to 7

 

[Justin74]

<a href=showthread.php?s=&postid=13262794#post13262794 target=_blank>Originally posted</a> by cnaegler
When my dkh was 10 or higher, i tended to have STN. Haven't had a problem since i lowered it to 7

same :strange:

-Justin

 

[pancho]

8.0

 

[spleify]

7.5 for me

 

[bill-fit]

I'm curious do you guys that have better results at lower alk 7-9 run a two part system or a calcium reactor? Some of the people that posted in this thread have that info listed,others don't.

My system uses a calcium reactor for most of the alk demand and is supplemented with a two part system.

 

[Mykel Obvious]

As stated earlier I'm at 9 dKH... Calcium at 450 ppm and pH at 8.4 using Randy's Two Part recipe #1 dosed 1 hour after lights out every night... frags all showing good growth and nice polyp extension

HTH

 

[cnaegler]

I use a calcium reactor on both tanks. ph @ 8-8.2, cal. @400, alk @ 7 ish (NSW)

 

[MCsaxmaster]

<a href=showthread.php?s=&postid=13258401#post13258401 target=_blank>Originally posted</a> by leeweber85
Anymore than 10-11 dKH is pretty dangerous...a lot of sps will respond negatively to higher levels (alk burn). U would stop dosing kalk or turn down your reactor.

Alk burn???

I've heard of people blaiming higher alkalinity for problems when dosing vodka/sugar/vinegar, or when using zeovit or similar systems. Without such methods, however, I've not heard of any problems. Something strange certainly appears to be going on with high alkalinity and vodka/sugar/vinegar/etc., at least for some folks, but without such extreme methods, I see no reason to be concerned about coral health with higher alkalinity. I might be concerned about excessive abiotic CaCO3 precipitation, but I don't see any reason to be concerned about the corals.

Chris