calcium hypocholorite

oldbeancounter

oldbeancounter

Well-Known Member
Thundercat said:
I used to live very close to the boarder growing up :). From age 19-21 I spent 1-2 nights a week in a club on Clifton Hill dancing and trying to meet girls. I had lots of fun dancing, but never met any decent girls.
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I never danced hardly ever but was known to be a bit of a man whore but I have retired...well maybe.
 
Gquebed

Gquebed

Well-Known Member
rkymtnman said:
i bought mine off ebay for about 30 bucks. i would go with precision if it were me. my dose for 20 gallons was only 0.60 grams which is about a few shakes of a salt shaker. it's a tiny amount because of it's concentration of chlorine.
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So you do .6 grams for 20 gal which gets 3 ppm? And you use this in a clean res to keep it clean i imagine? Now what if a guy has the brown sludge (not much yet) and wants to attack it? Can i go stronger... up to 5ppms or so?

Or does this only work for maintenance?
 
rkymtnman

rkymtnman

Well-Known Member
Gquebed said:
So you do .6 grams for 20 gal which gets 3 ppm? And you use this in a clean res to keep it clean i imagine? Now what if a guy has the brown sludge (not much yet) and wants to attack it? Can i go stronger... up to 5ppms or so?

Or does this only work for maintenance?
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5ppms is safe for humans and plants.

i dosed once/week and did a res change weekly.

if you have sludge, i think you'd be safe doing 2 doses at 3ppm per week.

as you get used to using it, you'll notice your smell will get less and less like a pool as the week goes on and it will go quicker if the chlorine is attacking any nasty stuff.
 
Thundercat

Thundercat

Well-Known Member
Chlorine will usually dissipate in 3-4 days max, so dosing twice a week is no big deal, especially if you are cleaning up your system. In flood and drain trays with a high level of water aeration I don't notice any chlorine smell after the first day, and even when I freshly dose the res it's very faint. We are talking about a really small amount of chlorine here.
 
Gquebed

Gquebed

Well-Known Member
rkymtnman said:
5ppms is safe for humans and plants.

i dosed once/week and did a res change weekly.

if you have sludge, i think you'd be safe doing 2 doses at 3ppm per week.

as you get used to using it, you'll notice your smell will get less and less like a pool as the week goes on and it will go quicker if the chlorine is attacking any nasty stuff.
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Thanks for the help.
 
Turpman

Turpman

Well-Known Member
Pretty sure you can get it at most of the local stores that carry pool/hot tub stuff.
I found 1 Kg of Aquarius brand 70% calcium hypoclorite at Canadian Tire I think.
1.4g per 1L for stock solution.
Add 1mill/liter for 1ppm, 2ml/L for 2ppm etc. That is if my math is correct.LOL
 
Gquebed

Gquebed

Well-Known Member
rkymtnman said:
5ppms is safe for humans and plants.

i dosed once/week and did a res change weekly.

if you have sludge, i think you'd be safe doing 2 doses at 3ppm per week.

as you get used to using it, you'll notice your smell will get less and less like a pool as the week goes on and it will go quicker if the chlorine is attacking any nasty stuff.
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When mixing a fresh res of nutes.... when should i add the calcium hypo? First, before nutes? Or last?
 
Thundercat

Thundercat

Well-Known Member
Gquebed said:
When mixing a fresh res of nutes.... when should i add the calcium hypo? First, before nutes? Or last?
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I always add it last after everything else is correct. I don't know if it really makes a difference though. Adding in extra doses not at the res change never seems to impact ph or anything.
 
Turpman

Turpman

Well-Known Member
Gquebed said:
When mixing a fresh res of nutes.... when should i add the calcium hypo? First, before nutes? Or last?
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You can just add it to your new res water and circulate for a bit if you are battling something. Then add you nutes. I have read that the chlorine will react with the salts quick.
 
5BY5LEC

5BY5LEC

Well-Known Member
rkymtnman said:
i weighed it out per dosing.

need a pretty accurate scale: to 0.01grams

0.10 grams per 10 gallons is 1ppm free chlorine
i ran at 3ppm ( 0.30g/10gal)
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Don't you have to add nearly twice as much since the HTH is only 62% CalHypo??
 
5BY5LEC

5BY5LEC

Well-Known Member
No, that math is right btw.
1g into a gallon of RO@ 58% Cal-Hypo seems to make a 150-200ppm stock solution for me.
Clear Res and UC Roots are both around .028 (or so) of HClO which is around 280ppms.
I found this stuff called Pure and Clean HClO. Double strength as compared UC and Clear Rez (.048) but around the same price.
 
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