Very confused (dKH ?)

Vanquishxxxx · 11/25/2006, 02:38 PM

my alk was 8.5 three days ago, i did a 25% water chnage yesterday with reefcrystals and measured alk today and it was only 6.0, i dont see how that is possible, i am using salifert and i tested it like 8 times to makes sure and it kept coming up as 6.0, i have a yellowe fiji leather, which i know hate low alk levels but looks great so i dont know wats up

aquaman67 · 11/25/2006, 11:46 PM

Since reefcrystals are high in calcium, it's possible.

Here's a good article.

http://www.reefcentral.com/forums/sh...hreadid=102605

drummereef · 11/26/2006, 12:49 AM

Yeah, could be the salt mix is low in alk. I use IO, make by the same company as Reef Crystals and the alk and calcium are both low in the mix. I have to suppliment when I do changes.

jdieck · 11/26/2006, 12:56 AM

Reef Crystals Calcium is in the 360 to 380 level and Alkalinity is as High as IO in the 9 to 10 dkH level but there could always be a batch out of specs.
So unless you had a high spike in consumption due to abiotic precipitation I would recomend to perpare a batch with the same salt and test the new mix for alkalinity.

buzzee · 11/26/2006, 02:25 AM

Alk changes super fast anyway depending on stock. Corals use carbonates more trhan anything else.

11/25/2006, 02:38 PM	#1
Vanquishxxxx Registered Member Join Date: Mar 2006 Location: Long Island Posts: 998	Very confused (dKH ?) my alk was 8.5 three days ago, i did a 25% water chnage yesterday with reefcrystals and measured alk today and it was only 6.0, i dont see how that is possible, i am using salifert and i tested it like 8 times to makes sure and it kept coming up as 6.0, i have a yellowe fiji leather, which i know hate low alk levels but looks great so i dont know wats up

11/26/2006, 12:49 AM	#3
drummereef Team RC Member Join Date: Jul 2006 Location: STL Posts: 14,754	Yeah, could be the salt mix is low in alk. I use IO, make by the same company as Reef Crystals and the alk and calcium are both low in the mix. I have to suppliment when I do changes. __________________ -Brett 180g Marineland Starfire In-Wall 278 gallon system

11/26/2006, 12:56 AM	#4
jdieck Registered Member Join Date: Dec 2002 Location: Maumee, OH Posts: 15,673	Reef Crystals Calcium is in the 360 to 380 level and Alkalinity is as High as IO in the 9 to 10 dkH level but there could always be a batch out of specs. So unless you had a high spike in consumption due to abiotic precipitation I would recomend to perpare a batch with the same salt and test the new mix for alkalinity. __________________ Did I write what I wrote? What the heck am I talking about! Well..... Nevermind. Current Tank Info: 225 gal reef, DSB, 40 g sump w/ LRT100 return, 37 g pre-sump, 3 MH 250 W 15K, 4 96 W PC dual actinic,ETS 1500 Skim.w/LRT70, 20 lb Ca R., 40 W UV, 1/3 HP chiller, two 350 W Htrs, Neptune II Cont., 330 P LR/ 330 P LS. 55 gal Refugium

11/25/2006, 11:46 PM	#2
aquaman67 Registered Member Join Date: Feb 2002 Location: Tennessee Posts: 7,629	Since reefcrystals are high in calcium, it's possible. Here's a good article. http://www.reefcentral.com/forums/sh...hreadid=102605

11/26/2006, 02:25 AM	#5
buzzee Registered Member Join Date: Oct 2004 Location: Auckland, NZ Posts: 149	Alk changes super fast anyway depending on stock. Corals use carbonates more trhan anything else.