Frozen Formula One 100g

• 14.5% crude protein as fed – a flesh-based diet for fish that pick at flake and ignore dried food.
• Mysis shrimp and plankton lead the declaration – the first two ingredients by inclusion are whole marine invertebrates rather than binder or filler.
• Gelatin-bound cube – holds together in the water column instead of dispersing on contact, so less of the feed ends up in the filter.
• Small plant and roe fraction – nori, kelp meal, yam and salmon eggs give omnivores more than straight flesh.
• Fed frozen, not thawed – the cube is built to keep its shape through the recommended feeding window.
• Full vitamin and mineral premix – including vitamin C, vitamin E, biotin and potassium iodide, declared in full below.
• Contains cochineal extract as an added colour – stated plainly, because some keepers prefer diets without added colours. Formula Two does not contain it.

Reproduced verbatim from Ocean Nutrition's published declaration, in the manufacturer's own order and spelling. Checked 7 August 2026.

Mysis shrimp, plankton, gelatin, mussels, squid, salmon eggs, nori, kelp meal, yam, brine shrimp, lecithin, cochineal extract (added colour), xanthan gum, paprika, fish oil, choline chloride, magnesium sulphate, iron, inositol, a-tocopherol acetate (source of vitamin E), zinc sulphate, manganese sulphate, calcium carbonate, biotin, calcium pantothenate, niacin, sodium selenite, pyridoxine hydrochloride (source of vitamin B6), riboflavin (source of vitamin B2), L-ascorbic acid (source of vitamin C), potassium iodide, vitamin A supplement, citric acid (preservative), folic acid, thiamine mononitrate (source of vitamin B1), menadione sodium bisulfite complex (source of vitamin K3 activity), cobalt carbonate, vitamin B12 supplement.

Allergen, additive and source notes

• Contains crustacean (mysis shrimp, brine shrimp), mollusc (mussels, squid) and fish (salmon eggs, fish oil) derivatives.
• Preservative: citric acid. No ethoxyquin, BHA or BHT appears anywhere in the declaration.
• Added colour: cochineal extract. Paprika is also present and contributes colour.

Figures are as fed, on the frozen product, as published by Ocean Nutrition.

Frozen foods are mostly water, so the protein figure looks low against a dry pellet. On a dry-matter basis 14.5% protein at 84.8% moisture works out near 95%, which is why frozen flesh foods put weight on fish that dry food does not.

Ocean Nutrition's published directions are to feed one to three times a day, and to feed no more than the fish will eat in five minutes.

• Break off the number of cubes you need and return the rest to the freezer immediately.
• Drop the cube into the tank frozen. Thawing is not recommended for this product.
• Remove any uneaten food once the fish have finished.
• Shy or slow feeders do better when the cube is dropped into flow so the food moves past them rather than settling in one corner.

If you prefer to rinse frozen foods to cut the pack liquid before it enters the tank, thaw a cube in a small cup of tank water and pour it through a fine net. That trades the manufacturer's intended cube behaviour for lower nutrient load in the water, so choose one approach or the other.

Protein figures below are as fed, from each product's own published analysis.

Formula One is the general-purpose choice of the cube diets. If your tank is dominated by tangs, rabbitfish or other grazers, Formula Two is the better fit.

Suitable for

• Marine angels, anthias, basslets, blennies, butterflyfish, cardinals, clownfish, chromis, gobies, puffers, pseudochromis and wrasses, as listed by the manufacturer.
• Small crabs and shrimps, which will take fragments off the substrate.
• Newly imported fish being weaned onto prepared foods.

Not suitable for

• Strict herbivores as a sole diet. Tangs, rabbitfish and pygmy angels need the algae fraction in Formula Two or a dried algae sheet such as Green Seaweed.
• Sponge-obligate angelfish and butterflyfish, which are better served by Angel Formula.
• Filter-feeding corals and clams – the particle size is far too large. Use a dedicated small-particle food instead.
• Tanks with no way to keep food frozen. This product has no shelf-stable option.

• Keep frozen in a domestic freezer. Return the blister to the freezer as soon as you have broken off what you need.
• Do not refreeze cubes that have fully thawed. Discard them.
• Repeated partial thawing softens the cubes and they stop holding together in the water, which is the main thing this product is designed to do.

• Frozen Formula Two 100g – the herbivore counterpart. Alternating the two covers a mixed reef community across the week.
• Frozen Mysis Flat 454g – a smaller whole-animal particle for fish whose mouths are too small for a cube fragment.
• Green Seaweed – dried algae for grazers, fed on a clip between cube feeds.
• Frozen Marine Quintet 100g – a five-item mix that adds variety without changing the feeding routine.

Frozen foods carry no manufacturer warranty period, as they are a consumable. Your rights under the Australian Consumer Law apply in full and are in addition to anything stated here – including the guarantee that goods are of acceptable quality and fit for their stated purpose.

Frozen food is pick up only from our North Lakes store, because a pack that thaws on the way cannot be refrozen.

Should I thaw Ocean Nutrition Formula One before feeding?

No. Ocean Nutrition states that thawing the cubes is not recommended, because the cube is designed to hold its form through the recommended feeding period. Drop the cube in frozen and let it break down in the tank.

How much Formula One should I feed at once?

Feed only what your fish will finish in five minutes, one to three times a day. For most mixed reef tanks under 200 litres that is a single cube per feed, and it is better to underfeed slightly and add a second cube than to leave food sitting on the sand.

Will Formula One cloud my aquarium water?

Any frozen food adds some dissolved organics, but the gelatin binder in Formula One holds the cube together rather than letting it disperse, so it clouds less than an unbound frozen food. Rinsing a thawed cube through a fine net reduces it further, at the cost of the cube's intended behaviour.

What is the difference between Formula One and Formula Two?

Formula One is the flesh diet at 14.5% protein and includes mussels and cochineal extract. Formula Two drops the mussels and the added colour, adds spirulina and garlic, and runs 12.0% protein – it is built for grazers such as tangs and rabbitfish rather than for carnivores.

Can freshwater fish eat Formula One?

Ocean Nutrition lists this product for marine species. Freshwater carnivores will readily take it, but a dedicated freshwater food is the better routine choice and there is no cost advantage in using a marine diet for them.

Is Formula One safe in a reef tank?

Yes, it is fed in reef tanks routinely. As with any frozen food, feed to a five-minute finish and remove leftovers, since uneaten flesh food is the usual cause of a nitrate climb in a lightly skimmed reef.