Frozen aquarium fish food is considered the best way to provide your fishes with the maximum amount of vital nutrients.

Scientifically, frozen foods comprise more nutritional values than dry and freeze dried forms. Flash frozen foods at certain temperatures effectively kill harmful pathogens.

Also, in nature, fishes have a predatory instinct. Frozen bloodworms, artemia, etc. comprising mainly insect protein also mimics the wriggling motion of prey in water which encourages even the most fussiest of eaters to consume food.

This question is hard to answer as different species of fishes have different appetites and some species are more quick eaters than the others.

However the main things to look for are:

1. How skinny or fatty your fishes look?

2. How much excess food is left over?

Ideally, your fishes should be having a slightly rounded abdomen after taking feed.

If the abdomen have a larger than normal bulge after feeding, consider decreasing the quantity of Discus Elites® frozen food cubes and if the bellies are sunken after taking feed consider increasing the quantity of Discus Elites® frozen food cubes.

Also if you find consistently that large amount of food is left over at the bottom of the aquarium after considerable time has passed, siphon out the leftovers and consider feeding less next time onwards.

Yes.

The greater the quantity of protein in food the more is the nitrogenous waste viz. nitrate, nitrite, ammonia.

It is recommended to siphon out the leftovers and consider feeding less next time onwards.

Yes.

Deli-worms™ - The Delicious Bloodworms can be fed to all carnivorous and omnivorous freshwater & marine fishes.

Yes.

Healthimia® - The Healthier Frozen Artemia can be fed to any freshwater and saltwater carnivorous & omnivorous fishes

No

If your community tank comprises fishes of yellow and white coloration, Nutriheart® Red is not recommended and may affect in undesired color changes in the fishes

Otherwise,

If your community aquarium has only red and blue colored fishes, you can feed Nutriheart® Red.

No.

Nutriheart® Yellow is only recommended for yellow colored fishes.

No.

Thawing is not needed. Just pop the cube/cubes and drop in your aquarium.