new nasa depth transducer - mounted in hull with sika

[moomba]

Although ethane diol is very toxic to mammals it is not considered harmful to aquatic life.

Not flaming this post but I was a marine biologist , in the field of cetaceans and these are mammals and live in the sea.
Just an error that I am happy to correct, and I am interested in this post as I have a NASA depth and I think i'm getting issues as well

 

[VicS]

Not flaming this post but I was a marine biologist , in the field of cetaceans and these are mammals and live in the sea.
Just an error that I am happy to correct, and I am interested in this post as I have a NASA depth and I think i'm getting issues as well

What is probably wrong in my post is the statement that it is "very toxic".. To humans at lest it is only classed as " harmful if ingested". In the marine environment its probably unlikely that marine mammals will ingest a harmful quantity. I believe it is not cumulative and degrades fairly rapidly in the presence of oxygen.
I tried to find some figures when the subject cropped up once before but IIRC all I found in connection with aquatic life was in relation to tadpoles, small fish (minnows ??) and other fresh water species.
The figures for propane diol were actually very similar indicating no valid reason , from the marine environmental point of view, in using it rather than ethane diol.

What we need is a marine biologist to look into the effects of both ethane and propane diols on marine life ............ you may be just the person!
It would be good to have your report before everyone empties their winterised cooling systems next spring.

 

[moomba]

What is probably wrong in my post is the statement that it is "very toxic".. To humans at lest it is only classed as " harmful if ingested". In the marine environment its probably unlikely that marine mammals will ingest a harmful quantity. I believe it is not cumulative and degrades fairly rapidly in the presence of oxygen.
I tried to find some figures when the subject cropped up once before but IIRC all I found in connection with aquatic life was in relation to tadpoles, small fish (minnows ??) and other fresh water species.
The figures for propane diol were actually very similar indicating no valid reason , from the marine environmental point of view, in using it rather than ethane diol.

What we need is a marine biologist to look into the effects of both ethane and propane diols on marine life ............ you may be just the person!
It would be good to have your report before everyone empties their winterised cooling systems next spring.

Fair point , defo worth looking into , in an ideal world all non organic waste from a boat should be taken off the boat and disposed of responsibly , but there.s another thread I don.t need right now .