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Search took 0.14 seconds. Search: Posts Made By: andy-hipkiss
Forum: The Reef Chemistry Forum 12/15/2004, 11:50 AM
Replies: 30
Views: 838
Posted By andy-hipkiss
Lab Reagent - pretty meaningless really

Lab Reagent - pretty meaningless really
Forum: The Reef Chemistry Forum 12/14/2004, 02:01 PM
Replies: 30
Views: 838
Posted By andy-hipkiss
Dunno if you want to extend this to a fairly...

Dunno if you want to extend this to a fairly commonly used UK supply but ... http://www.labpakchemicals.com/product.asp?CatID=32&ProdID=215


HTH
Forum: Advanced Topics 10/18/2004, 11:18 AM
Replies: 424
Views: 36,259
Posted By andy-hipkiss
I find mine a bit prone to electrical leaks as...

I find mine a bit prone to electrical leaks as they age. Also they don't always start up when plugged in. Also they have a plastic sheath to the impellor magnet that gets chewed up over time...
Forum: Advanced Topics 10/17/2004, 01:37 PM
Replies: 424
Views: 36,259
Posted By andy-hipkiss
Bob, It varies based upon model. I have a...

Bob,

It varies based upon model. I have a TS1060 which WAS so called because it was based on two Eheim 1060s (obvious really ;) ) now they are powered by 2 Aquabee 2000/1 which is a real shame.
...
Forum: Advanced Topics 10/17/2004, 11:37 AM
Replies: 424
Views: 36,259
Posted By andy-hipkiss
IME, avoid the Aquabee'd skimmers and go for the...

IME, avoid the Aquabee'd skimmers and go for the Eheim versions.

I've had 2 Deltecs and now use an ATK (the 5 foot jobbie). All are flawed in some way or another. The Deltecs because of the...
Forum: The Reef Chemistry Forum 10/14/2004, 11:30 AM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Thankfully I have access to many linux boxes :D

Thankfully I have access to many linux boxes :D
Forum: The Reef Chemistry Forum 10/14/2004, 09:52 AM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Cheers chaps. I shall shoot her an email as soon...

Cheers chaps. I shall shoot her an email as soon as I get home this evening.

Worrying thought though .... will their program agree with Craig's figures :eek2:

I'll let you know how it goes...
Forum: The Reef Chemistry Forum 10/14/2004, 09:33 AM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Randy, :bounce1: I'm not sure of the...

Randy,

:bounce1:

I'm not sure of the protocol here. Is it considered a reasonable thing to do just to email Maria Guiomar and ask for the program and/or output of the program she and her...
Forum: The Reef Chemistry Forum 10/14/2004, 01:54 AM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Having spent hours yesterday night trawling the...

Having spent hours yesterday night trawling the internet looking for Gibbs data and Ksp values the one firm conclusion I've come to it that nobody seems to know! The 1.85 g/l at 0C and 0.77 at 100C...
Forum: The Reef Chemistry Forum 10/13/2004, 11:18 AM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
I suspect you're right! Interestingly...

I suspect you're right!

Interestingly perhaps, the figures given in GEM-Selektor appear quite different to those from the previously given web page. I'm just trying to find the G and S for...
Forum: The Reef Chemistry Forum 10/13/2004, 04:21 AM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Habib, I found part of the error in your...

Habib,

I found part of the error in your additions. You hadn't divided the Ksp by 4 before raising it to the 1/3. Also found part of the error in my original sheet, I'd missed a conversion...
Forum: The Reef Chemistry Forum 10/13/2004, 02:14 AM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Randy, The g/l figures for 20 and 25C came...

Randy,

The g/l figures for 20 and 25C came from MSDSs. I wonder how much variabilities of manufacturer impact here.

Either way, I suspect I need to go back to the spreadsheet and factor in...
Forum: The Reef Chemistry Forum 10/12/2004, 04:12 PM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
curse, I can't find my AFQ mags.

curse, I can't find my AFQ mags.
Forum: The Reef Chemistry Forum 10/12/2004, 03:54 PM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Habib, Hmm the search button doesn't seem to...

Habib,

Hmm the search button doesn't seem to be my friend at the moment.

I've collected the following (I've derived the Ca levels ... hopefully correctly)


Temp g/l ppm Ca
0 1.85 1001
10...
Forum: The Reef Chemistry Forum 10/12/2004, 02:59 PM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Randy, Ah I see now what you are saying. ...

Randy,

Ah I see now what you are saying.

(sorry dieing of a cold, oops no I mean a manly sized bout of flu ;) only women have colds of course :D , and the brain is roughly 33cm distant from...
Forum: The Reef Chemistry Forum 10/12/2004, 02:38 PM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Habib, As ever - you're a star. I hate to...

Habib,

As ever - you're a star. I hate to think how much beer I owe you :D


Randy,

Are you saying the modifications Habib did are incorrect or has he built in the correct variance?
Forum: The Reef Chemistry Forum 10/12/2004, 01:31 PM
Replies: 39
Views: 1,096
Posted By andy-hipkiss
Ksp calculation for certain temps

Randy et al,


arrrghhh, help please!

I'm trying to do a calculator of solubility of Ca(OH)2 vs temp based on thermodynamic data.

Sadly it's turning in a spectacular failure ??

At 25C...
Forum: SCUBA/Snorkeling 10/09/2003, 11:31 AM
Replies: 38
Views: 971
Posted By andy-hipkiss
Nice photo! Where about in the Red Sea was that...

Nice photo! Where about in the Red Sea was that taken?
Forum: The Reef Chemistry Forum 09/22/2003, 12:49 PM
Replies: 102
Views: 6,230
Posted By andy-hipkiss
Randy, Has someone got a picture of a...

Randy,



Has someone got a picture of a yellowing card ... it's been over a decade since I last had one and I never paid them too much attention even then.
Forum: The Reef Chemistry Forum 09/22/2003, 12:45 PM
Replies: 102
Views: 6,230
Posted By andy-hipkiss
Habib, ...

Habib,



http://csc.gallaudet.edu/soarhigh/Leaves/ReflectanceGraphs.html

480 in well in the blue range.

http://www.andy-hipkiss.co.uk/colours.htm
Forum: The Reef Chemistry Forum 09/22/2003, 12:17 PM
Replies: 102
Views: 6,230
Posted By andy-hipkiss
http://reefcentral.com/forums/attachment.php?posti...

http://reefcentral.com/forums/attachment.php?postid=1784221

Ok guys help me out here ... yellow is what (?) around 590 nm ... IOW to me the graph shows that a yellow strip is extremely poor at...
Forum: The Reef Chemistry Forum 09/21/2003, 03:43 PM
Replies: 102
Views: 6,230
Posted By andy-hipkiss
Simon, Weird ... the CC stuff was the...

Simon,



Weird ... the CC stuff was the highest rated. How odd. :eek1:
Forum: The Reef Chemistry Forum 09/21/2003, 03:36 PM
Replies: 102
Views: 6,230
Posted By andy-hipkiss
Habib, Could be right however redox...

Habib,



Could be right however redox held steady (in fact climbed slightly), not that I think this is any sort of indicator but in lieu of any other sort of measurement it's as good as I've...
Forum: The Reef Chemistry Forum 09/21/2003, 03:29 PM
Replies: 102
Views: 6,230
Posted By andy-hipkiss
Mat, I hoped to convey that the most...

Mat,



I hoped to convey that the most significant attenuation was in the near UV range not blue. Will attenuation of yellow wavelengths give us a good indicator of UV absorption?
Forum: The Reef Chemistry Forum 09/19/2003, 11:55 AM
Replies: 102
Views: 6,230
Posted By andy-hipkiss
Habib, I'm really sorry but I...

Habib,




I'm really sorry but I missed that post, in fact I still can't see it .. obviously I'm having yet another stupid day :( Could you repost or point me in the right direction please?
Showing results 1 to 25 of 324
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