Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 12-10-2003, 03:21 PM   #1
Aquarium Advice Regular
 
Join Date: Apr 2003
Location: Flint,Texas
Posts: 84
Low PH - everything else OK?

I recently got Salifert kits for everything I test (I chose these because of advice on this board).
My old test kits (can't remember which ones now) were always difficult to judge color change etc. One of the things I assumed was reported wrongly was PH - it always came out about 8.0 any time of the day.

However the new Salifert kit reports the same - 8.0.
Other parameters seem OK - Amm.=0, Nitrite=0,Nitrate=1-2,PO4=0,Calc.=380,Salinity=1.025.
I've got clown fish, a fat, healthy yellow tang, reef chromis, brittle star, shrimp, mushroom corals, various polyps - everything seem happy and is growing well.
But I can't seem to get the PH up. I dose everyday with Kalk (I know the calcium is a bit low but I'm slowly getting this up).

I can't really believe that BOTH kits give the same wrong value. Getting the water tested at the LFS is NOT an option (my LFS would have difficulty RECOGNISING water, let alone testing it!).

Any ideas?
__________________

__________________
AndySmithers is offline   Reply With Quote
Old 12-10-2003, 03:43 PM   #2
AA Team Emeritus
 
Join Date: May 2002
Location: Virginia
Posts: 2,256
Send a message via ICQ to fishfreek Send a message via AIM to fishfreek Send a message via MSN to fishfreek Send a message via Yahoo to fishfreek
Do you know what your alkinity is? Alkinity and PH are tied together in a really confusing mess of chemistry I have failed to master comprehension of.

The PH level could be affected by oxygen content in the water. Increasing the surface agitation could help with this.

You say you have a PH of 8.0 at any time of the day. Does this include just before lights come on and just before the lights go off?
__________________

__________________
Remember dont tap the glass, your fish will think you're an idiot -Anonymous mother

Check out our articles area. 30+ Aquatic articles for your enjoyment
Are you in or around the Shenandoah Valley area? If so click here to join our regional forum.
fishfreek is offline   Reply With Quote
Old 12-10-2003, 09:09 PM   #3
Aquarium Advice Regular
 
Join Date: Apr 2003
Location: Flint,Texas
Posts: 84
FishFreek,
I forgot alkalinity, didn't I? This measure at about 4.00meq/L.
Is this good?

I've got a fair bit of surface water movement (600PH spray bar), 3 x 270GPH PH's - the surface is pretty turbulent....

As for the PH readings, yesterday's reading was just before lights out in the evening. I've never measured just before lights on, but I'd expect it to be lower then, yes?
I do also run a small sump/fuge with inverse photperiod lights and macro from Hara.

Got me stumped this one, I'm pushing up the Kalk dosage at the moment to get the calcium higher....
__________________
AndySmithers is offline   Reply With Quote
Old 12-11-2003, 12:42 AM   #4
Aquarium Advice Activist
 
Join Date: Jul 2003
Location: fort lauderdale, fl
Posts: 154
i have a ph monitor about $100 but worth every penny. it's very interesting to watch the readings go up and down. (if your a fish person anyway!) it doesn't help you right now but i'd definately reccomend one.
__________________
lilismom1 is offline   Reply With Quote
Old 12-11-2003, 12:53 AM   #5
steve-s
Guest
 
Posts: n/a
Re: Low PH - everything else OK?

Quote:
Originally Posted by AndySmithers
Any ideas?
Does the main tank have glass lid and do you regularly open a window to allow fresh air into the room? Your problem could be ambient or trapped CO2.

BTW, the kalk will not fix the calcium if the alk is already at 4 mEq/l. You need to use a CaCl additive to raise the Ca independantly...

Cheers
Steve
__________________
  Reply With Quote
Old 12-11-2003, 10:18 AM   #6
Aquarium Advice Regular
 
Join Date: Apr 2003
Location: Flint,Texas
Posts: 84
The tank does not have a glass lid. It does have a mostly closed hood with the PC's in but it' ventilated with fans all the time the lights are on.
It's also a pretty big open plan house so not convinced it could be CO2 buildup.

But, can you explain more on the ALK/Ca thing? I've never really got to grips with this part of the hobby.
I actually measured ALK and Ca again first thing this morning. Not sure if it's my technique or real changes but the figures today are:

Ca=380ppm, Alk=3.5meq/L. According to the calculator at Andy's SPS reef this is not in balance but how do I balance this?
Are saying that it matters not how much Kalk I add now, I won't get the Ca up because the ALk is already high? Why?

Confused,
Andy.
__________________
AndySmithers is offline   Reply With Quote
Old 12-11-2003, 11:44 AM   #7
steve-s
Guest
 
Posts: n/a
Quote:
Originally Posted by AndySmithers
Are saying that it matters not how much Kalk I add now, I won't get the Ca up because the ALk is already high? Why?.
Kalkwasser raises/maintains the chemistry in equal amounts. It adjusts both alk and Ca at the same time. So it cannot help bring up the Ca to a balanced level against the alk. You need to use a seperate calcium additive solely first to bring the Ca up to 430 ppm and then once balanced, drip the kalk to keep it there. You may still need to tweek the numbers once in awhile with seperate buffer/CaCl additions though.

Even though you are adding these elements back in a balanced fashion, the consumption of CaCO3 animals in the tank will not neccessarily use them in a balanced fashion. The chemistry is also affected by the skimmer and other equipment in the tank.

Cheers
Steve
__________________
  Reply With Quote
Reply

Tags
low ph

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What plants survive at low pH & low light (6.0 or under) Jeffs Freshwater & Brackish - Planted Tanks 9 06-03-2011 01:52 AM
Chemistry: Low pH, Low dK, High Calcium ronin33 Saltwater Reef Aquaria 8 04-23-2009 02:42 AM
WTB Low/Med-Low light floating plants zacusmaximus Archive 1 08-10-2007 04:22 AM
10 gallon low light (15W), low tech planted tank filter? TomK2 Freshwater & Brackish - Planted Tanks 7 03-16-2005 11:55 AM
Add ins for low light low planted tank? Deitta Freshwater & Brackish - Planted Tanks 9 05-05-2004 03:15 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 08:36 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.