No one is saving any money by purchasing food in that type of quantity. If you truly want to compare costs you need to compare bulk prices (as in the lowest prices), and even more importantly the total digestibility of the food, not just the sticker price, or how eagerly your fish consume it. I have no problem feeding my fish anything that I want, most fish are gluttonous pigs.
FYI - NLS also contains kelp, and always has. Their "algae meal" consists of seaweed, kelp, and several micro-algae. And of course they also have spirulina in each formula. Sardine Meal is a lower cost, lower quality fish meal, compared to Herring meal. Hence the reason why Northfin isn't using 100% Herring meal. They aren't adding Sardine meal to boost the nutrient levels in the food.
Adding montmorillonite clay is simply a marketing gimmick that originated with Koi food, a knock off of what the makers of Dainichi fish food have been doing for many years. From a nutrient standpoint it didn't make sense when Dainichi added it to their cichlid food, and it doesn't make any sense now. But, a lot of people have drank the clay kool-aid over the years so from a marketing perspective I can understand why Northfin added it to their food.
If you're happy with the food that's great, but IMO it's a wee bit early to be jumping up & down about how awesome a food is, when it's only been on the market for such a short time, and so far a market that is primarliy in the GTA.
FYI - I just checked prices with an online vendor in ON that sells both NLS & Northfin. Northfin 250 grams - $17.00 ...... NLS 300 grams - $15.00
And in the larger bulk size containers, it most certainly doesn't appear to be cheaper either. In Canada, both NLS & Xtreme cost less.
