Recaharging purigen with safe.

[jaws7777]

I dont remember the ratio of safe to cups of water i used to use but according to seachem is 16 grams (roughly 4 tablespoons) per cup of water.

How much safe per cup of water are you guys using.

Seachems response to my email.


" If you need further elaboration: the difference in dosage is based on each products capability to neutralize the 8.25% hypochlorite solution recommended for Purigen regeneration. You are welcome to use less Safe, but the is the amount we recommend to remove toxicity from the bleach:water solution using our water conditioner Safe.

Safe is not a concentrated, dry version equivalent to the effectiveness of Prime. This is a common misconception. It is actually a different formulation of a water conditioner and has varied capabilities than Prime in regard to chlorine and chloramine concentration as it is not the same product. The amount listed is based on the amount of hypochlorite in the bleach suggested versus the amount each dose of the two different conditioners will be able to remove. Since Prime has a different level of effectiveness than Safe in regard to removing the 8.25% hypochlorite, the dosage will not be equivalent between the two conditioners "

 

[kno4te]

In the past I've done, safe 100mg per cup of water. Been a while though.

 

[jaws7777]

In the past I've done, safe 100mg per cup of water. Been a while though.

So tjats about 1/4 teaspoon per cup ?

 

[ragin_cajun]

I've recharged it with bleach. When it turns close to white, I rinse it real good with tap water. then put some safe in the water to neutralize whatever chlorine is left. I just dump a little on top of the purigen pouches and let it set a while.

 

[kno4te]

Remember using a scooper back then.

 

[jaws7777]

I've recharged it with bleach. When it turns close to white, I rinse it real good with tap water. then put some safe in the water to neutralize whatever chlorine is left. I just dump a little on top of the purigen pouches and let it set a while.

Seachem rep said 16 gram per cup of water after the bleach soaking. That seems ridiculous to me

 

[ragin_cajun]

16 grams per cup.......I just go with "a splash", or "a little". I use it pretty liberally because I got a deal on a gallon jug of the "Pond Safe" a while back.....

 

[Drstrangelove]

I dont remember the ratio of safe to cups of water i used to use but according to seachem is 16 grams (roughly 4 tablespoons) per cup of water.

Are you sure of that? I'm seeing 4 tablespoons is 60 grams.

E.g.

1 tablespoon of water weighs 14.79 grams
1 tablespoon of table salt weighs 18.25 grams
1 tablespoon of butter weighs 14.19 grams
1 tablespoon of oil (canola or soy) weighs 13.62 grams
1 tablespoon of sugar (granulated) weighs 12.5 grams
1 tablespoon of sugar (brown) weighs 13.8 grams (packed)

If you want 16 grams, it's probably 1 tablespoon, not 4.

 

[jaws7777]

Are you sure of that? I'm seeing 4 tablespoons is 60 grams.

E.g.

1 tablespoon of water weighs 14.79 grams
1 tablespoon of table salt weighs 18.25 grams
1 tablespoon of butter weighs 14.19 grams
1 tablespoon of oil (canola or soy) weighs 13.62 grams
1 tablespoon of sugar (granulated) weighs 12.5 grams
1 tablespoon of sugar (brown) weighs 13.8 grams (packed)

If you want 16 grams, it's probably 1 tablespoon, not 4.

Your totally correct thx i think i confused the 4 tables spoons of prime and the 16 grams of safe. But even then it seems like way too much to me.

If 1 capful (5ml) of prime treats 50 gal of tank water and they are saying that its 4 table spoons (14ml x4= 56ml) of prime per cup of water when recharging.

1 1/4 teaspoon of safe treats 300 gal of tank water. 1.2 mililiter per 1/4 teaspoon of safe. 12 1/4 teaspoons per table spoon.


Shouldnt we be using less than 16 grams of safe when recharging the purigen ?
Sorry if that doesnt make sense its early and i hate math

 

[Drstrangelove]

Your totally correct thx i think i confused the 4 tables spoons of prime and the 16 grams of safe. But even then it seems like way too much to me.

If 1 capful (5ml) of prime treats 50 gal of tank water and they are saying that its 4 table spoons (14ml x4= 56ml) of prime per cup of water when recharging.

1 1/4 teaspoon of safe treats 300 gal of tank water. 1.2 mililiter per 1/4 teaspoon of safe. 12 1/4 teaspoons per table spoon.

Shouldn't we be using less than 16 grams of safe when recharging purigen?
Sorry if that doesn't make sense its early and i hate math

You have a good question. Shouldn't the chemicals have the same ratio of use whether treating or recharging. I think they do, but see the discussion below and let me know if you agree or you see an error in my math or logic.

First, (ignoring that one is dry and the other a liquid), Safe and Prime are not identical. Prime includes additives that handle metals and that are chemical stabilizers. That's why Safe has to be used soon after it's mixed. They are highly similar and for most people can be thought of "similar enough" to be interchangeable. In almost every case it doesn't cause a problem to call them the same. But they aren't truly the same.

It's possible that Seachem thinks there should be a different concentration (relatively speaking) between treatment and recharging due to how Purigen adsorbs. I can't say but it's worth considering.

Treatment:
Prime 30 ml for 300 gallons
Safe 1.25 tsp (6.25 ml) for 300 gallons

Ratio: 30:6.25 or 4.8. You need 4.8x as much prime as safe to treat.


Recharging
Prime 56 ml for 1 cup
Safe 1 tbl (14.9 ml) for 1 cup

Ratio: 56:14.9 or 3.8. You need 3.8x as much prime as safe to recharge.

Comparison is 4.8 to 3.8.

Keep in mind that treatment instructions are often "rounded" for simplification or ease of use. One cap full happens to be a better instruction than .8 cap fulls. 1.25 tsp is better than saying 1.14 tsp. So the ratios should not be expected to be exactly the same when comparing treatment to recharging. I'd bet that if Seachem provided the exact amounts that the ratios would be identical, but that simplifications in the instructions are causing it to be off.

But 4.8 to 3.8 indicates it's probably meant to be the same ratio whether treating or recharging.