TM has never said they do not recommend Ozone, just that they do not use it themselves.
RE: ORP and TM Pro
It has been repeatedly reported to us that the use of our salts caused drops of the ORP but no further adverse effects have been reported.
The ORP mainly is used in aquaria to indicate a organic pollution. Since there are no organic substances in our Tropic Marin Sea Salt or PRO-REEF, organics can not be the cause of the drop of ORP.
Obviously the drop of ORP is caused by reduced inorganic salts like for example iodide but it is hard to tell exactly on a complex mixture like synthetic seawater.
The drop of the ORP after use of PRO-REEF is not specific for PRO-REEF or the indicated batch numbers.
I hope this can dispel the fears of your customers.
Kindest regards
Hans-Werner Balling
Dr. Biener GmbH
as already stated until now no adverse affects in connection with ORP depression by water changes with our salts have been reported.
We don´t use ozone in our aquaria and so we have no observations to give you concrete recommendations.
To be carefull we recommend to keep ozone dosing constant by regulating dosing manually or to find other precautions to avoid overdosing of ozone.
I think there is no cause to be really concerned about the depression of the ORP if overdosing of ozone is avoided since there are more than three decades of good experiences with our salts.
Thank you and kind regards
Hans-Werner Balling
Dr. Biener GmbH