Food coloring

Malum Argenteum · May 19, 2024

GARRIGA said:
I’ve used this in the past to test flow patterns but that was a test tank and wasn’t concern if it was toxic to corals. Didn’t expect it being toxic to fish since it’s not supposedly toxic to humans. Thoughts on using it in a tank with corals? Easily removed with GAC as far as the coloring.

Below are the ingredients from McCormick my wife has and clueless I’m using.

Propylparaben is suspected to contribute to coral bleaching, based on experimental evidence of bleaching in other organisms.

https://www.sciencedirect.com/science/article/abs/pii/S0022098114001130

GARRIGA · May 20, 2024

taricha said:
I totally forgot i'd seen that done before.

Could it be AB+?

GARRIGA · May 20, 2024

TokenReefer said:
Try calcium carbonate. You can see the flow if you got a good eye (it will mix quickly) and then you can see your filtration work it out of the system and I don't think there are downsides to even consider

Would that give different results vs using Seachem Clarity? Coral snow was suggested previously and I'm going to use it regardless to clarify.

GARRIGA · May 20, 2024

Malum Argenteum said:
Propylparaben is suspected to contribute to coral bleaching, based on experimental evidence of bleaching in other organisms.

https://www.sciencedirect.com/science/article/abs/pii/S0022098114001130

Then that nixed food coloring. AB+ for now or flocculant.

Gill the 3rd · May 20, 2024

I second the coral snow. I can always see my flow patterns when I dump it in my tank before if fully mixes. Nothing toxic to worry about either.

TokenReefer · May 20, 2024

GARRIGA said:
Would that give different results vs using Seachem Clarity? Coral snow was suggested previously and I'm going to use it regardless to clarify.

Sorry I must have missed where it was suggested. I second it then. Nope. No difference; it's all CaCO₃ far as I know.