How much too feed?

I've been splitting a cube per day to these fish in 2 tanks. Alternating the foods mysis krill Is it too much or to little they are always hungry ? I also have algae on a clip

Scopas tang
Foxface
2 clowns
Damsel
Scooter blenny
Dragon wrasse
Fairy wrasse
Bluegreen Chromis

I have no water issues so I assume I don't feed too much all food is gone from what I can tell in 5 minutes.

 

It is probably way to little compared to what the fish would get in the wild but it isn't a uncommon amount for a reef tank. I feed a variable amount but I feed alot of flake food and some frozen. I say feed as much as you can while keeping parameters good.

 

I was shaky with feedings in the beginning. Now I look for leftovers. If there are, I feed a little less. If none, I'll try a little more. Then you reach the right amount and make a habit out of it. But don't feed to much that it changes water quality, as sostoudt stated above.

 

I feed mine once daily and there are no leftovers within 2 minutes. I feed mostly flake and put in several small pinches so they usually eat it up quickly. as for the nori, I feed in 1/4 sheet increments and it wont last long enough for me to put in a clip. IMO, your fish will always be willing to eat more unless they gorge themselves. mine I know would eat every time I went up to the tank.

 

I just feed my tank twice a day: once with flake food and once with cyclops.

 

The best rule is "whatever your fish can consume within 3 minutes".

Also, that tang needs some herbivore food...