Is APT Fix different from Seachem Excel?

geekindenial said:

Folks has anyone used APT Fix for spot treating BBA?

I wonder if this is the same as excel? Does it work better? Or is it just more concentrated excel?

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This is a good question.

I happen to know the source.

I will send him a note and see if he will divulge the secret!

APT Fix claims to contain "3% epoxy aldehyde". Excel is 1.5% glutaraldeyde. Similar but not identical nasty chemical, looks like.

Thanks guys.

Update: tried APT fix spot dosing for BBA (have some occasionally on rocks and some anubias leaves.

Its definitely more effective against bba compared to excel.

Would be interesting to know if the effectiveness is due to the different concentration. A person might dilute the APT by 50%, or use stock glutaraldeyde (which, IIRC, is 2.7%) to test.

Very strange substance to be in a product going in a tank. No information whatsoever on the internet about epoxy aldehyde and its effects on algae and more importantly on fauna and flora. I found this which looks concerning to me: