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  #26  
Old 01/11/2008, 09:16 AM
RokleM RokleM is offline
Pingy Pingy!
 
Join Date: Apr 2005
Location: Columbus, OH
Posts: 2,812
.02 Rowaphos. I typically check it every few weeks, and change when it starts to hit .04-.05 or so.
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  #27  
Old 01/11/2008, 10:57 AM
mflamb mflamb is offline
Patient Reefer
 
Join Date: Jun 2006
Location: Seffner Florida
Posts: 4,091
Quote:
Originally posted by jamesdawson
Nice looking DIY reactors!

Do you have a build thread on them?

James
We did a club build, no thread.
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Click on my red house to see my 390 build thread.
  #28  
Old 01/11/2008, 11:10 AM
kirstenk kirstenk is offline
HELP SLOW
 
Join Date: Dec 2001
Location: Scottsdale, AZ
Posts: 4,246
My PO4 reading on a Hanna Meter is 0.00.

I would like to see a reading of 0.01-0.03. I need some phosphates.

Big E mentioned the relationship between PO4 and NO3 and I also think there is a balance between the two that will be optimal for our tanks. I have no reason to doubt that his corals are colorful with a higher reading of PO4 than most and this would be due to that balance.

For those that say they try and keep PO4 at such and such a reading. How do you do it? I need PO4. How can I get some? Over feeding is not the answer. Been there done that. The only thing that achieves for me is a higher NO3 reading......sometimes getting up to 25.
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KIRSTEN

REDUCE, REUSE, RECYCLE

they paved paradise and put up a parking lot.
  #29  
Old 01/11/2008, 11:29 AM
takayan takayan is offline
Premium Member
 
Join Date: Aug 2004
Location: Superior, CO
Posts: 127
I am just wondering Hanna Phosphate meter is very accurate?
Does everyone have Smart2 Colorimeter?
  #30  
Old 01/11/2008, 06:20 PM
Creetin Creetin is offline
Limestone cowboy
 
Join Date: Jan 2004
Location: In a little place i like to call a little place.
Posts: 2,682
Hanna is highly reccomended, Boomer says he trusts them enough for our hobby, and thats good enough for me.
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  #31  
Old 01/11/2008, 06:48 PM
takayan takayan is offline
Premium Member
 
Join Date: Aug 2004
Location: Superior, CO
Posts: 127
Thank you, Creetin!
  #32  
Old 01/11/2008, 08:05 PM
midas blenny midas blenny is offline
Registered Member
 
Join Date: Oct 2007
Posts: 13
Quote:
Originally posted by kirstenk
My PO4 reading on a Hanna Meter is 0.00.

I would like to see a reading of 0.01-0.03. I need some phosphates.

Big E mentioned the relationship between PO4 and NO3 and I also think there is a balance between the two that will be optimal for our tanks. I have no reason to doubt that his corals are colorful with a higher reading of PO4 than most and this would be due to that balance.

For those that say they try and keep PO4 at such and such a reading. How do you do it? I need PO4. How can I get some? Over feeding is not the answer. Been there done that. The only thing that achieves for me is a higher NO3 reading......sometimes getting up to 25.
have the same problem. feed like crazy, and it does not go up. i think it has to do with the half inch thick of white sponge under my rock. alot of spong!!!!!
  #33  
Old 01/11/2008, 08:37 PM
DocG DocG is offline
Premium Member
 
Join Date: Oct 2002
Location: Sarnia, Ontario
Posts: 510
My phosphates are 0.01 with a Hanna and have been like that for 4 months now, before that the phosphates were 0.04

The color difference between 0.01 and 0.04 is subtle but it is slightly better at 0.01. What is surprising is the difference in the growth of the corals, they are growing far faster at 0.01 then they did at 0.04.

Don
  #34  
Old 01/11/2008, 09:14 PM
bundy13 bundy13 is offline
Premium Member
 
Join Date: Sep 2006
Posts: 363
'

po4-hanna 0.02 phosban
no3-pinpoint 2-4


colors always look look better ,when i need to change my gfo
  #35  
Old 01/11/2008, 10:09 PM
kirstenk kirstenk is offline
HELP SLOW
 
Join Date: Dec 2001
Location: Scottsdale, AZ
Posts: 4,246
Quote:
Originally posted by midas blenny
have the same problem. feed like crazy, and it does not go up. i think it has to do with the half inch thick of white sponge under my rock. alot of spong!!!!!
ahhh.....sigh. So where do we go from here? I have considered dosing phosphates (can't remember the form). I may have to venture over to the planted forum for that info.
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KIRSTEN

REDUCE, REUSE, RECYCLE

they paved paradise and put up a parking lot.
  #36  
Old 01/11/2008, 10:31 PM
bundy13 bundy13 is offline
Premium Member
 
Join Date: Sep 2006
Posts: 363
´

every time i go out of town and ,sitter over feeds,
when i come home my trates are like 15 po4 was 0.16 ,all sps have better color and PE ,i just cant stand the GH so i keep them low,

hanna ,and pinpoint for trates
  #37  
Old 01/12/2008, 12:52 AM
HBtank HBtank is offline
saltwater in my veins
 
Join Date: Jan 2006
Location: Huntington Beach, CA
Posts: 2,060
.02 on my Hanna tonight

N03 was .03-.04 on the salifert kit.
  #38  
Old 01/12/2008, 01:03 AM
TomRep TomRep is offline
Premium Member
 
Join Date: Jan 2004
Location: Reading, PA
Posts: 676
PO4- 0.00 on meter tonight, NO3- 0 Salifert kit tonight
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  #39  
Old 01/12/2008, 02:04 AM
delphinus delphinus is offline
Hopelessly undecided
 
Join Date: Dec 2001
Location: Calgary, AB., Canada
Posts: 1,046
I wonder if I have a bad Hanna tester. I can't for the life of me get consistent readings out of it. It seems like nobody else here in this thread has this problem?

For example I'll test my tank one night, get a reading of 0.18. The next night, I'll test again the next night and get 0.02. That seems ridiculous? Phosphate won't fluctuate that wildly will it? I think something's not right here.

I need to do like 10 tests in a row and see how badly it fluctuates .. but haven't had the patience to try it since you have to zero out between samples, and then of course do the read-timed for 3 minutes after zeroing. Mind you if I don't zero out the tester and just do a "read direct" on the same sample, I'll get the same reading. So maybe it's a reagents thing... some are reacting darker than others?

Although I tried one thing tonight .. I did a zero, then tried a read direct (without any reagent) .. expecting a zero reading. It came back under-range. I repeated this several times and each time it came back under-range. That seems wrong? Can someone try it on theirs and let me know if they get the same result, or if they get a legit 0.00 reading?

I first suspected the tester itself but I checked my water against another reefer near me who has the same unit, and we both got the same sort of fluctuating results. So I thought maybe my tester was OK after alll .. although I suppose the other possibility is we're both sitting on bad units.

I really would appreciate it if anyone has any thoughts or suggestions or have noticed any fluctuations in their day-to-day testing using the Hanna LR. Maybe PM me if it's uncool to hijack this thread.

PS. I don't even get a 0.00 reading on my RO/DI - I'm amazed that some of you are getting 0.00 in your tanks..
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My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
  #40  
Old 01/12/2008, 03:30 AM
bundy13 bundy13 is offline
Premium Member
 
Join Date: Sep 2006
Posts: 363
.

when i first got my meter i was getting off the wall readings like you described and thought i had a bad meter,

now i get consistent readings by,before i go to read timed

i make sure all the reagent is completely dissolved it takes me about a minute to shake enough to dissolve completely

and i make sure the covet is completely clean in and out with no air bubbles or fingerprints ,that's the only way i get consistent readings,

is anyone using pinpoint for no3
 

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