[AquaticLife] Heavy Metals
I would think it’s fine to use. Basic dechlor’s that treat chlorine/chloramine and heavy metals have been used for a long time with no apparent adverse side effects. If you haven’t seen me post this before, either API’s Tap Water Conditioner or Top Fin’s Tap Water Dechlorinator are two of the most cost effective products that I’ve seen in the 8 oz. to 16 oz. sizes. There may be better bargains with other brands on larger sizes. I used to buy the powdered product for pond usage but bought a gallon of liquid once also but it was more expensive.
Here’s one where this 500gm package will make a gallon of dechlor and it’s only $6.50… but a gallon of dechlor would last me for years and years nowadays with only aquariums… although I don’t think it goes bad. http://secure.sciencecompany.com/Sodium-Thiosulfate-Pentahydrate-500g-P6376C 670.aspx
I just don’t remember if Sodium Thiosulfate also treats heavy metals. Here’s a snip from Kordon’s site about heavy metals and it mentions “tetrasodium salts” so I’m not sure if the Sodium Thiosulfate also has these salts in it (but read on as I answer this later).
(START SNIP) The scientists associated with Kordon found that the best way to control and eliminate heavy metals in the water is by the use of nontoxic forms of one or more Edetate compounds as used in agricultural chemicals, hydroponics, and medical chelation therapy. The basic chemical formula from which proper compounds are derived for aquarium and pond water conditioning is usually described chemically as Ethylene Diamine TetraAcetate. In the form of tetrasodium salts, which is used as a chelating agent to eliminate all heavy metals. The scientists associated with Kordon pioneered in developing the use of the proper Edetate compounds in aquarium and pond water conditioners many years before others followed in aquaculture and elsewhere. Kordon continues to pioneer in improvements. (END SNIP)
The MSDS on API’s Tap Water Dechlorinator (which also treats heavy metals) has the following: http://cms.marsfishcare.com/files/msds/tapwaterconditioner_2449.pdf
NAME CAS RN % sodium thiosulfate 7772-98-7 30.2 EDTA tetrasodium salt 64-02-8 9.8
So… it seems the EDTA salts are something in addition to the S.T. so disregard the powdered S.T. as it will only act as a dechlor.
Another liquid brand I just remembered is Weco Dechlor (and treats heavy metals) which was pretty cheap but I haven’t priced it in a while either but this site http://www.enkoi.com/subcat253.html has the gallon size for $27.50 and it looks pretty efficient at 2 drops per gallon which would be around 1ml per 10G… which is near what the API and Top Fin dechlors treat. API advertises 1 drop per gallon http://www.aquariumpharm.com/Products/Product.aspx?ProductID=46. Many other dechlor products use anywhere from 2ml to 5ml or even 10ml per 10G of water. Note: 20 drops = 1ml (most of the time)
Lenny Vasbinder Fish Blog - http://GoldLenny.blogspot.com (Links to any articles referenced in above reply are listed on the right side, alphabetically under Labels and also under Archives by Year, Month)
Category: Philippines Internet Koi Society
