Assumption since I've seen the food:
Most likely Instant Oceans "Gel" Food.
They have a whole line of "new" foods under the Instant Ocean brand name.
I have not seen this "offer" any where for buying "reef crystals" or "IO" buckets.
However, I have seen the whole line of new IO food available for sale.
a few kinds of "Gel" food that come in squeezable packets. Vegi, carnivore, mix etc.. It's a sort of "dry stock" form of Liquid like food that is the IO answer to "alternative" to frozen.
There is also IO algae/nori like dry strips and
these new sit on the bottom food "discs".
The discs are available in herbivore and carnivore styles as well as a different mix.
I have not tried any of this. Thought it looked maybe interesting. However, I'm definitely not a fan of the "disc" like stuff. It reminds me of those ridiculous "vacation food" discs you see in "freshwater". I'm sure the food is better quality than that. It kind of looks it. But still, it's designed to sit in tank until all gone. A possible waste spreading around ones tank if not eaten enough.
According to IO, fish go nuts over it. It's supposed to be formulated out of really good ingredients. But I'm skeptical.
I still prefer my various frozen foods including Rods and The ocean nutrition algae strips and pellets, J Sprung nori etc..
It looks like oneradtek202 got a Gel "Sample" free for buying Reef Crystals.
Perhaps a special promo right now.
I do like Reef Crystals, but this food, I don't know...
Anyone tried any??