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New RANDY's 2 part
- Thread starter paradoxycal
- Start date
bbyatv
New member
Dow Lot Number Question
Dow Lot Number Question
I have read that Dow flake lot numbers starting with "U" were made in 2006 and should not have a bromide problem. My problem is that it is very difficult to read the lot number on my bag.
Here is a link on how to decode a Dow lot number:
http://dow-gco.custhelp.com/cgi-bin/dow_gc...amp;p_topview=1
Can anyone look at thier bag and tell me if there is a colon used after the word "Lot" in the lot number?
If so I think my bag reads Lot: UC10????
Thanks for any help.
Bruce
Here are some pictures of my lot number using various angles and lighting:
Dow Lot Number Question
I have read that Dow flake lot numbers starting with "U" were made in 2006 and should not have a bromide problem. My problem is that it is very difficult to read the lot number on my bag.
Here is a link on how to decode a Dow lot number:
http://dow-gco.custhelp.com/cgi-bin/dow_gc...amp;p_topview=1
Can anyone look at thier bag and tell me if there is a colon used after the word "Lot" in the lot number?
If so I think my bag reads Lot: UC10????
Thanks for any help.
Bruce
Here are some pictures of my lot number using various angles and lighting:
DeathWish302
Clown Hoarder
Saddler:
Are you storing this baked baking soda for later dissolution? I would think for consistency sake you should bake only as much as you need. Otherwise I think CO2 and water could be absorbed when storing (think of clumping when storing sugar). Maybe this is not the case, it is just my opinion.
DW302
Are you storing this baked baking soda for later dissolution? I would think for consistency sake you should bake only as much as you need. Otherwise I think CO2 and water could be absorbed when storing (think of clumping when storing sugar). Maybe this is not the case, it is just my opinion.
DW302
WaterssretaW
New member
is arm and hammer baking soda okay?
I have a couple bags of Peladow - the lot number appears to be VF0401HI12. The August 2005 notice from Dow says that:
"For bulk shipments, lot numbers beginning with the letter "U" will designate product with the new impurity profile. For packaged products, lot numbers ending with the letters "PC" will designate product with the new impurity profile."
Does anyone know if 50lb bags of Peladow are considered "packaged" products? And, if so, would these be considered "old" formula since they do not contain the PC designation, although the lot date would be April 07 from the lot number?
"For bulk shipments, lot numbers beginning with the letter "U" will designate product with the new impurity profile. For packaged products, lot numbers ending with the letters "PC" will designate product with the new impurity profile."
Does anyone know if 50lb bags of Peladow are considered "packaged" products? And, if so, would these be considered "old" formula since they do not contain the PC designation, although the lot date would be April 07 from the lot number?
DevilBoy
New member
Randy,
I am using the 2 part solution from bulkreefsupply. I have been noticing in order for me to keep my alk and ca where i want it at (9dKH alk and 450ppm ca) I have to dose 10ml more of alk a day then ca . is this normal? am i doing something wrong? i was always under the impression that it should be a equal daily dosage
I am using the 2 part solution from bulkreefsupply. I have been noticing in order for me to keep my alk and ca where i want it at (9dKH alk and 450ppm ca) I have to dose 10ml more of alk a day then ca . is this normal? am i doing something wrong? i was always under the impression that it should be a equal daily dosage
jdieck
New member
Assuming you are not having any abiotic precipitation that can give the impression that more alkalinity than calcium is being consummed most probably it is a variation in the solution concentration.
It is very difficult to achieve the perfect solution concentrations using cups as masuring due to variances and differences in the powder degree of moisture and bulk density.
Just make the alkalinity solution a bit stronger and you will be OK.
jdieck
New member
Formation of Calcium carbonate in which a living organism (Like corals or clams) did not participate. In other words is the simple chemical combination of calcium and carbonate alkalinity to form calcium carbonate due to supersaturated conditions usually characterized by high PH and high levels of calcium and /or alkalinity.
When calcium and alkalinity form calcium carbonate precipitate without us noticing it can give the impression that calcium and alkalinity consumption in our system is higher than what the actual consumption by calcifying organisms is. The end result could be that we keep on increasing our supplementation increasing the precipitation and creating a vicious circle. More precipitation > more supplementation and so on until the precipitation becomes noticeable in the way of a "snow" effect or heavy incrustations of calcium carbonate on heaters, pump impellers and shafts, GFO media or sand turning into clumps glued together by the precipitate.
Because precipitation will consume 2.8 dKh of alkalinity for only 20 ppm of calcium and counting in the relative inaccuracies of our testing kits, it can give the impression that more alkalinity than calcium is being consumed.
What is that Precipitate in My Reef Aquarium?
http://reefkeeping.com/issues/2005-07/rhf/index.htm
Last edited:
DevilBoy
New member
i really dont think that is my problem after reading the article. I see no snow clouds or anything like that. I feel my levels are pretty good.
pH - 8.1 - 8.3
alk - 9 dKH
ca - 450ppm
mag - 1550ppm
The reason my mag is so high is that i am trying to get rid of a little bryopsis problem and i want to knock it out before it becomes a major problem. as of now it isnt just a few tufts here and there
pH - 8.1 - 8.3
alk - 9 dKH
ca - 450ppm
mag - 1550ppm
The reason my mag is so high is that i am trying to get rid of a little bryopsis problem and i want to knock it out before it becomes a major problem. as of now it isnt just a few tufts here and there
jdieck
New member
That is relatively easy. Say if you are adding 60 ml of calcium part and need to add 70 ml of alkalinity part just increase the amount of powder when making the alkalinity solution by 70/60 = 1.17 times. So if you are using 1.5 increase it in this example to 1.5 x 1.17 = 1.76 cups or about 1-3/4 cups.
Follow the above example to get the right numbers.
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