JamesC
Member
I don't know what is used in AE's carbon or Easycarbo but I know for sure that Seachem's Excel is not a solution of glutaraldehyde. It is a solution containg Polycycloglutaracetal which is safer to use than Glutaraldehyde and acording to Seachem is more easily utilised by the plants. Glutaraldehyde is pretty nasty stuff and I'd be surprised if AE and Easy life use it.
To what I read on other forums it does appear that some people have used glutaraldehyde with success so who knows.
James
To what I read on other forums it does appear that some people have used glutaraldehyde with success so who knows.
James
davidcmadrid said:" In 1999 the HSC approved a proposal that exposure to glutaraldehyde should be controlled to a Maximum Exposure Limit (MEL) of 0.05 parts per million, for both short-term (15 minutes) and long-term (8 hour time-weighted average) exposure. Peak vapour concentrations should not exceed this level.This change was prompted because of the impossibility of determining a safe exposure limit for glutaraldehyde. MELs require employers to prevent exposure to the substance "
http://www.rcn.org.uk/__data/assets/pdf ... 001362.pdf
l
The medical industry is working on ways of phasing out the use of this product currently.
Seachem are naturally tight lipped about their concentration but only because US federal law is loose in regards to this aldehyde. They are also keen to avoid associating themselves with the notion that it kills algae. For the moment I have stopped using this product and sealed it. I am concerned about exposure through evaporation of the tank into the sitting room , and rooting around in the tank after a water change at which point its concentrations are higher. Quite honestly i was looking into its contents to see if i Could make it myself and it now clear that this is not something i want to be touching at all.
http://msds.chem.ox.ac.uk/GL/glutaric_dialdehyde.html