Acan coral colour change additives.

Earlier this year I put in another form of acan that was more or less just bland colour.
Last time, I got them to go some wonderful colours with the use of iron and iodide additives and with my foods so they stay open nearly all the time as well adding colour to them.
Along with my water quality, it is so nice to see something as basically one colour take on three and sometimes five colours in one acan type.

This is it in April.


This is it now.
It works a treat!