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Search took 0.10 seconds. Search: Posts Made By: CapitalO
Forum: The Reef Chemistry Forum 10/28/2007, 10:29 PM
Replies: 72
Views: 3,552
Posted By CapitalO
No problem, I'm using a 1 micron sediment...

No problem,

I'm using a 1 micron sediment filter, followed by two chloramine block carbon stages. The membrane is a DOW FilmTech TFC rated at 75 gpd.
Forum: The Reef Chemistry Forum 10/28/2007, 03:12 PM
Replies: 72
Views: 3,552
Posted By CapitalO
I just ran a few silicate tests on my RO/DI...

I just ran a few silicate tests on my RO/DI water. I tested my feed water, RO water, RODI water, and waste water:

Feed water: 10+ mg/L

RO water: ~0.25 mg/L

RODI water: <0.25mg/L

Waste...
Forum: The Reef Chemistry Forum 10/28/2007, 01:33 PM
Replies: 72
Views: 3,552
Posted By CapitalO
Thanks for the info Boomer, I have the same...

Thanks for the info Boomer, I have the same filmtech membrane in my RO as you posted. I might do some water tests today and compare silica in my feed water to effluent from RO vs. after RO and DI....
Forum: The Reef Chemistry Forum 10/27/2007, 09:00 PM
Replies: 72
Views: 3,552
Posted By CapitalO
Boomer, after getting my head around the passage...

Boomer, after getting my head around the passage you posted (somewhat.. :) ), it seems like "CA" membranes do a great job of rejecting colloidal silicates but not so good with the reactive variety....
Forum: The Reef Chemistry Forum 10/27/2007, 12:25 PM
Replies: 33
Views: 1,096
Posted By CapitalO
Wow, I didn't realize there was so much debate...

Wow, I didn't realize there was so much debate about this. I think the best case for not drinking RO/DI water is the bacterial dangers.

In the thread that Howard posted, someone was talking about...
Forum: The Reef Chemistry Forum 10/26/2007, 02:20 PM
Replies: 4
Views: 217
Posted By CapitalO
Thats a really good question. I don't know the...

Thats a really good question. I don't know the answer though :)
Forum: The Reef Chemistry Forum 10/26/2007, 12:17 PM
Replies: 33
Views: 1,096
Posted By CapitalO
A lot of people think DI water is bad for you...

A lot of people think DI water is bad for you because it doesnt have any salts (or electrolytes) so its hypotonic to our cells. This would imply that we lose electolytes by drinking pure water since...
Forum: The Reef Chemistry Forum 10/25/2007, 01:50 PM
Replies: 28
Views: 968
Posted By CapitalO
Exactly, its creating calcium chloride (as well...

Exactly, its creating calcium chloride (as well as magnesium and strontium salts too), as you said.

As far as running it in-line, I think it could be done; the concentration of HCl will determine...
Forum: The Reef Chemistry Forum 10/24/2007, 11:44 AM
Replies: 28
Views: 968
Posted By CapitalO
I think running diluted HCl solution through a...

I think running diluted HCl solution through a reactor with aragonite would be a cool idea. It could put a ton of calcium in solution and would be really low cost since you wouldnt need all the CO2...
Forum: The Reef Chemistry Forum 10/21/2007, 12:37 PM
Replies: 2
Views: 455
Posted By CapitalO
Thanks bertoni, I had a feeling that was the...

Thanks bertoni, I had a feeling that was the case. I guess I'll have to get some new buckets; does anyone have any recommendations?
Forum: The Reef Chemistry Forum 10/21/2007, 11:47 AM
Replies: 2
Views: 455
Posted By CapitalO
Using Food Grade Plastics, Why?

Ive been using the white 'True Value' buckets for a long time to mix salt water for water changes. This weekend was a bit busy, and I let some salt water mix for about 2 days (usually I just do 24...
Forum: The Reef Chemistry Forum 10/21/2007, 11:33 AM
Replies: 28
Views: 968
Posted By CapitalO
Thats pretty much the same question in my last...

Thats pretty much the same question in my last post. Its hard to determine if it would be more efficient or not... You could run some numbers to determine the amount of product per volume for both DI...
Forum: The Reef Chemistry Forum 10/20/2007, 05:52 PM
Replies: 28
Views: 968
Posted By CapitalO
bertoni, thats a great article for this...

bertoni, thats a great article for this question... It provides strong evidence that using DI water would work to a degree. It shows that water with a bunch of dissolved CO2 can dissolve quite a bit...
Forum: The Reef Chemistry Forum 10/20/2007, 04:52 PM
Replies: 28
Views: 968
Posted By CapitalO
Magnesium will allow salt water to have a super...

Magnesium will allow salt water to have a super saturation for a longer period of time, but thats in salt water with a pH of 8 and up...

The saturation of calcium and carbonate in fresh water of a...
Forum: The Reef Chemistry Forum 10/20/2007, 02:13 PM
Replies: 28
Views: 968
Posted By CapitalO
DI water should be at or extremely close to...

DI water should be at or extremely close to neutral (pH = 7) because there are no ions. Adding CO2 to DI water should drop the pH pretty quickly and I would imagine it would drop faster and lower...
Forum: The Reef Chemistry Forum 10/19/2007, 09:02 PM
Replies: 2
Views: 325
Posted By CapitalO
I second that, the silica is surely coming from...

I second that, the silica is surely coming from your make up water. I think a DI cartridge specifically designed for silicate removal would go a long way. In many cases DI units won't completely...
Forum: The Reef Chemistry Forum 10/19/2007, 11:54 AM
Replies: 14
Views: 768
Posted By CapitalO
Were basically saying the same thing, my logic...

Were basically saying the same thing, my logic was a bit off but the conclusion was the same for practical purposes.

The whole thing about the solubility of organics in salt water totally makes...
Forum: The Reef Chemistry Forum 10/19/2007, 11:39 AM
Replies: 6
Views: 422
Posted By CapitalO
Kalkwasser is actually water with calcium and...

Kalkwasser is actually water with calcium and hydroxide ions in solution. Alk is basically the sum of all the basic stuff in solution; since hydroxide ions are very basic, they make a contribution to...
Forum: The Reef Chemistry Forum 10/19/2007, 11:17 AM
Replies: 6
Views: 323
Posted By CapitalO
I would suggest running more CO2 through the Ca...

I would suggest running more CO2 through the Ca reactor during the day and less at night. That will help drop your pH during the day and increase the output of your Ca reactor.
Forum: Lighting, Filtration & Other Equipment 10/18/2007, 03:25 PM
Replies: 2
Views: 293
Posted By CapitalO
yea, Ive heard good things about that bulb from...

yea, Ive heard good things about that bulb from other people too. Any idea where I can get one?? Ive looked around, but didn't come up with anything.
Forum: The Reef Chemistry Forum 10/18/2007, 02:11 PM
Replies: 14
Views: 771
Posted By CapitalO
I think dripping the kalk throughout the night...

I think dripping the kalk throughout the night will help quite a bit. The hydroxide in the kalk will react with the dissolved CO2 in the water to form bicarbonate; so essentially, your removing the...
Forum: Lighting, Filtration & Other Equipment 10/18/2007, 01:35 PM
Replies: 2
Views: 293
Posted By CapitalO
70W lamps.. whats the deal?

It's about time for me to change out my 70W HQI metal halide lamp and I've noticed that the selection is really poor. The few options I've found are not cheap either; $70-90 seems about average.
...
Forum: The Reef Chemistry Forum 10/17/2007, 04:11 PM
Replies: 14
Views: 771
Posted By CapitalO
Actually, I'm totally wrong about that last...

Actually, I'm totally wrong about that last statement. The hydroxide in kalkwasser will interact with dissolved CO2 and form carbonate and bicarbonate... sorry about that
Forum: The Reef Chemistry Forum 10/17/2007, 03:51 PM
Replies: 14
Views: 768
Posted By CapitalO
Putting any sort of hydrophobic particulates in...

Putting any sort of hydrophobic particulates in the water will increase a skimmers output (the surface of each bubble attracts hydrophobic stuff).

When a skimmer 'goes nuts' its probably taking...
Forum: The Reef Chemistry Forum 10/17/2007, 02:02 PM
Replies: 14
Views: 771
Posted By CapitalO
Is the high flow continued through the night or...

Is the high flow continued through the night or only during the day?

Also, is your test kit measuring total alkalinity or corbonate alkalinity? Your carbonate could be too low; dosing kalkwasser...
Showing results 1 to 25 of 289
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